January 15, 2020 – MamaJo’s journey is 70 percent complete.  Today she’s about 300 feet north of Taylor Street.  Meanwhile related work in neighborhoods along the St. Marys and Maumee River continues with drop shaft and consolidation sewer work.

Below - Photo on left shows crews pouring the mud mat at drop shaft 5 (Thieme Drive) so they can continue work.  The work on Thieme is two projects the drop shaft and a consolidation sewer. On the right we see the wall being formed inside drop shaft 1 (Foster Park). January 8-14, 2021.

76003 2021 01 13 DS05 Workers spreading and finishing mud mat76003 2021 01 08 ds1 forming wall 

Below work at drop shaft 2 (Waldron Circle) shows crews working on the duct bank on the left and photo on the right is of workers installing bolts on vent. January 8-14, 2021.

76003 2021 01 08 ds2 getting ready to pour duct bank76003 2021 01 08 ds2 installing bolts on vent piping  

Consolidation sewer under the St. Marys River, near the Harrison Street Bridge sees crews pouring placing forms below the river level and pouring flowable fill over pipes installed. January 8-14, 2021.

76467 2021 13 1 Pouring flowable fill over pipe76467 2021 13 1 Pouring flowable fill over pipe

January 8, 2021 - Drop shaft work continues thorughout the tunnel route as we enter the year when MamaJo is expected to finish her five mile journey. 

Photos below (left) drop shaft 5 (Thieme Drive) where crews are installing interior walls. on the (right) the phot shows a nearly completed drop shaft 7 at (Guldlin Park)   Week of January 4-8, 2021. 

76003 2021 01 04 ds5 installing interior wells 76003 2021 01 04 DS07 Plug after SpecGrout placed inside to stop water

Photos below (left) drop shaft 1 (Foster Park) waith wall work underway.   Week of January 4-8, 2021. 

76003 2020 12 30 114751830 1 DS1 76003 2021 01 06 ds1 walls 1

 

December 31, 2020 – We are heading into a big year – 2021!  MamaJo is scheduled to complete her nearly 5-mile journey. This week work continued at drop shaft location sand in the tunnel.

Photos below (left) drop shaft 2 (Waldron Circle) where they are pouring of concrete, and (right) forms being hoisted to go down drop shaft 1 (Foster Park).  Week of December 28-31, 2020.

76003 2020 12 29 ds2 first load of concrete 76003 2020 12 29 ds1 flying in forms

Photos below l-r show drop shaft 3 (Brown Street) where excavation is continuing, drop shaft 5 (Thieme Drive) where they are vacuuming and clearing out water to place the casing for the pump and inside view of the concrete structure at drop shaft 7 ( Guldlin Park).

76003 2020 12 29 DS03 Continnuing to excavate 76003 2020 12 28 DS05 Vacuuming to place casing for pump 76003 2020 12 29 DS07 Inside view of structure a

December 23, 2020 – Crews will break for the holiday, but work continued this week.

Photos below show drop shaft 1 (Foster Park) crews installed the base mat and began installying the sensors. Week of Dec 20-23.

76003 2020 12 21 ds1 installing sensor Copy76003 2020 12 21 ds1 installing sensor Copy

76003 2020 12 21 ds1 sump pit Copy76003 2020 12 21 ds1 sump pit Copy

Below - photo on the left shows sheeting being removed at drop shaft 7 (Guldlin Park) and work at drop shaft 2 (Waldron Circle) Week of Dec 20-23.

76003 2020 12 18 ds2 ers removal 76003 2020 12 18 ds2 ers removal

December 18, 2020 -- Mamajo has crossed under the RR tracks south of Jefferson Boulevard  and is heading south following the path of the St. Marys to Foster Park. 

Work on the consolidation sewer under the St. Marys River continues. Below are photos of crews pumpiing out water inside the coffer dams so they can continue the work. This view is just east of the Harrison Street bridge. Week of December 13-18, 2020. 

76467 2020 12 15 excavator work at Harrison Street for 3rd street pump station consolidation76467 2020 12 15 excavator work at Harrison Street for 3rd street pump station consolidation

At drop shaft #2  forms being pulled out and progress at drop shaft #3 (Brown Street) on the right.  Week of December 13-18, 2020. 

76003 2020 12 15 ds2 removing ers system  76003 2020 12 15 ds3 excavation

 December 11, 2020 -- Drop shafts 2,6 and 7 are moving into their final stages.  Week of Dec-11

At drop shaft #2  below (Waldron Circle) the vortex was installed this week. Below is a wide shot showing the space it will be lowered into and here is a video link of the lower from 12-10-20. https://youtu.be/1u0sbNtOm2w

76003 2020 12 08 ds2 removing ers system 76003 2020 12 09 ds2 vortex delivered

At drop shaft #6 below (Camp Allen) crews working to restore.  Photo on right shows progress at drop shaft #5 (Thieme Drive) where workers continue installing support beams. 

Week of Dec-11

76003 2020 12 08 ds6 backfilling 176003 2020 12 09 ds5 access ladder

At drop shaft #7 below (Guldlin Park) crews removed dewatering pumps, compacted sand and tested the compaction.  Photo on the right shows drop shaft #3 (Brown Street/Hale Avenue) where crewxcavation continues around the drop shaft. 

Week of Dec-11

76003 2020 12 09 DS07 compacting sand with vibratory compactor 76003 2020 12 09 ds3 kokosing continues to dig

 

December 5, 2020 – MamaJo hit the three-mile mark on Thursday, December 3, 2020.   She’s just crossed under Jefferson Blvd. and is heading south.  

MamaJo with 3 mile sign morning of 12 3 2020

Photos below show drop shaft 5 on left (Thieme Drive) and progress with casing from dewatering pipe cut flush to excavation. On the right we see worker welding the whaler. Week of Nov 3-Dec 4

 76003 2020 12 02 DS05 Hardman welding waler on east wall76003 2020 12 02 DS05 Hardman welding waler on east wall

Photos below show drop shaft 7 (Guldlin Park) where the forms are being removed. Week of Nov 3-Dec 4

76003 2020 12 02 DS07 Crane removing EFCO form A 76003 2020 12 02 DS07 All EFCO forms removed smaller

Photos for below show that crews have moved to a different location on construction of the Third Street Pump Station Consolidation Sewer.  Crews are pumping out water from inside the cofferdam so they can get to work on the next phase. Week of Nov 3-Dec 4

Third Street Pump Station Consolidation Sewer CU of dumping water 

November 25, 2020 – Progress continues for the tunnel and several connecting projects. MamaJo is under the Swinney Park pond this week.

Photos below are the Third Street Consolidation Sewer project – going under the river.  Photo on the left shows the sheeting that his holding back the water and on the right you can see the form and if you look to the right hand corner of the photo you see a work, that would actually be under water if it wasn’t for the sheeting.  At the top of the photo you can see the inside of the sheeting wall that surrounds the workers. Week of November 23, 2020.

76467 2020 11 23 site photo 1a76467 2020 11 23 site photo 1a

At drop shaft #7 below (Guldlin Park) you see on the left photo how deep the workers are as you can count the rungs on the ladders.  On the right you see the concrete forms and the drop shaft at the top.  Week of November 23, 2020.

76003 2020 11 20 DS07 Top slab forms finished 76003 2020 11 20 DS07 Top slab forms finished

November 20, 2020 -- MamaJo has completed 61% of her journey and is under Swinney Park today.  She’s still making the turn to head south toward Foster Park.

Photo on left at drop shaft #2 (Waldron Circle) is more than 80% complete and photo on right shows work this week at drop shaft #3 (Brown Street) at about 75% complete (week of Nov 14-20)

76003 2020 11 17 DS03 Progress picture 1 76003 2020 11 17 DS03 Progress picture 1

Below shows his week's excafaction atdrop shaft #5 on the right (Thieme Drive) and #7 (Guldlin Park)  on the left (week of Nov 14-20)

76003 2020 11 18 DS05 Mini excavator hammering concrete structure 76003 2020 11 18 DS05 Mini excavator hammering concrete structure

Photos from DS #6 (Camp Allen Drive) show the progress using both poured and precast concrete (week of Nov 14-20)

76003 2020 11 17 DS06 placing concrete around lid with dump bucket76003 2020 11 17 DS06 placing concrete around lid with dump bucket

November 13, 2020 - Crews set the vortex in drop shaft 5 this week as work continued throughout the tunnel route. The vortex is used to deter odor and corrison caused by wastewater. 

Drop shaft 6 at Camp Allen Drive - Vortex at 2,700 pounds, 10-feet high and 6.5-feet in diameter is now in place. 

Click to watch video of vortex lowering

76003 2020 11 12 DS06 Drilling for restraining strap mount for vortex

 

Drop shaft 7 at Guldlin Park - form work continues. 

76003 2020 11 11 DS07 Installing EFCO form on east wall 1

 

Work at the consolidation sewer that goes under the river continues near drop shaft #9 - Headwater Park West. 

76467 2020 12 11 Site Dowels 676467 2020 12 11 Site Dowels 6

76467 2020 12 11 Site Dowels 6

 

 

November 7, 2020 -  MamaJo is under Swinney Park this week making her journey south. Drop shaft work continued throughout the route this week. Photos below show drop shaft 6 and 7. 

Drop shaft 7 at Guldlin Park - Photo 1 shows the massive size of the work with workers on the side. Photo 2 shows the lowering of a concrete form. Week of Nov 2-6 

76003 2020 10 30 DS07 Tying rebar along south wall 176003 2020 11 05 DS07 Placing EFCO form

Drop shaft 6 at Camp Allen Drive - work is about 90% complete. In the second photo you see a closeup of the vortext that will be hoisted and lowered down the drop shaft later this month. Week of Nov 2-6

76003 2020 11 04 DS06 Backfill progress Vortex at DS 6

 

October 30, 2020 -- Drop shaft and consolidation sewer work continues along the tunnel route. Looking back to photos from the week before you see dramatic photos at drop shaft 7 - Guldlin Park. To give perspective on the structure in these photos -- it's about 30 feet, 60 to bottom. 

Drop shaft 7 at Guldlin Park - Week of Oct 26

76003 2020 10 27 DS07 Ironworkers tying rebar on south face 76003 2020 10 26 DS07 Installing closure strips on intierior EFCO forms

Work at Thieme and Berry continues with a consolidation sewer and drop shaft 5 are under construction. Photos below show crews placing whalers - on first photo the drop shaft is visible on the right hand side. Week of October 26

76003 2020 10 26 DS05 installing wailer supports onto sheeting 276003 2020 10 27 DS05 Placing wailer beam along northeast side of sheeting

October 23, 2020 – Heavy rains left standing water at drop shaft worksites, but crews were still able to make the week productive.

Worker’s used flowable fill before installing forms at drop shaft 7 located at Guldlin Park. Week of Oct. 19

76003 2020 10 16 DS07 Placing flowable fill with dump bucket 2 76003 2020 10 20 DS07 Outlining for EFCO form placement 

                                        76003 2020 10 21 DS07 Interior EFCO form progress

Work at Drop shaft 6 near Camp Allen Drive saw form and dowels installed. Week of Oct. 19

76003 2020 10 21 DS06 Installing water stop and forms around 42 inch RCP 76003 2020 10 21 DS06 Installing water stop and forms around 42 inch RCP


Standing water caused some delays at drop shaft 5 (Thieme Drive) but crews were still able to excavate. 

76003 2020 10 21 DS05 About a foot of water in excavation76003 2020 10 20 DS05 Excavating inside sheeting

October 16, 2020 -- Construction continues for the consolidation sewer pipe that will transport flow from neighborhoods north of the St. Marys River to a drop shaft and ultimately to the deep rock tunnel. Currently, overflows from these rivers dump into the St. Marys River at Third Street. This outfall is the largest outfall in the sewer system.

In the photos below, you can see the work that is going on below the bottom of the riverbed. The steel sheeting is the cofferdam that holds the water. The gray whalers above the workers support the dam. The last picture, showing the men standing on the scaffolding, gives us perspective. Their feet are just below the riverbed level. If the cofferdam weren’t there, they would be underwater.

76467 2020 10 01Grout Pour 376467 2020 10 13 Site photo RM 9

76467 2020 10 01Grout Pour 5 RESIZED 

October 8, 2020 - MamaJo took a break last week for the installation of an additional pump that is routinely installed as the tunnel distance extends.  The break was a bit longer than anticipated as a glitch occurred in communication with the Programable Logic Control box.  Crews were successful with troubleshooting efforts and MamaJo was moving again on Tuesday (10/6).  Elsewhere, drop shaft work continued in the photos below that show just how large the tunnel support projects are in neighobrhoods along the rivers. 

Photos show crews working to ground the Programable Logic Control system. Week of October 5, 2020

Programable Logic Control Box

This week's drop shaft photos are (posted 10/8/20)

Photo 1 - drop shaft 07 at Guldlin Park - St. Marys River Guldlin

Photo 2 - drop shaft #12 at East Central Park - Maumee River

76003 2020 10 05 DS07 Rebar mat at beginning of shift76003 2020 10 06 DS12 Installing closure strips

Posted 10/8/20

Photo 1 - drop shaft #2 on Waldron Circle - St. Marys River

Photo 2  - drop shaft #6 on Camp Allen Drive - St. Marys River

76003 2020 10 01 DS02 Tying concrete forms together76003 2020 09 30 DS06 Progress

 

September 29, 2020 -  Pile driving completed today on drop shaft 5 at Thieme Drive. 

DS 5 piles done

 

September 28, 2020 -- Pile driving should be wrapping on this week on drop shaft 5 at Thieme Drive.  Photos below were taken late last week. 

76003 2020 09 18 DS05 Moving I beams to be placed along outline of excavation76003 2020 09 21 DS05 Placing sheeting in the morning

September 18, 2020 – MamJo continues her journey under the St. Marys River, just south of Main Street. Photos below show sheeting installation began at drop shaft #5 on Thieme Drive just east of the St. Marys River and a second photos at drop shaft 12 showing the inside forms being placed near the Maumee River.

76003 2020 09 16 DS5 Progress near end of shift 176003 2020 09 11 DS12 Inside concrete forms being placed

 

September 11, 2020 -- Consolidation sewers, near-surface sewer pipes that collect or consolidate the flow from existing sewer pipes and delivers the flow to the drop shaft, are wrapping up on a couple of large projects that have closed streets. Rudisill and Broadway opened to traffic last week with crews continuing restoration work through next week. On Superior Street, crews were paving this week and weather permitting the road stripes and lane dividers should be painted, and the road restored by the end of next week. At drop shaft #12 (East Central Park) crews were busy pouring concrete.

Consolidation sewer on Superior is aimed at keeping nearly 5 million gallons of sewage from the St. Marys River near Promanade and Headwater Park. Crews use fill-stone pulled from the deep rock tunnel on the project, which placed the 48-inch pipe under Superior Street. Crews worked on scorching hot days and in the rain. Paving began the week of (9/8/20).

Superior Street June 2020 consolidation sewer near Barr with FILLSuperior Consoldiation sewer working in the rain 

Superior Paving after Consolidation Sewer 2020 Sept 10

Concrete work continues at Drop Shaft #12 located at East Central Park, near the Maumee River. 

76003 2020 09 09 DS12 Pouring concrete base

 

September 4, 2020 -- A busy week at DS #2 (Waldron Circle) where crews placed frames and poured concrete.  Photos below show workers place fram with rebar, pouring concrete and revmoving forms and cleaning up debris.

76003 2020 08 31 DS02 putting zip ties around rebar76003 2020 09 01 DS02 Concrete poured and spread 

76003 2020 09 02 DS02 Concrete poured and sealed 76003 2020 09 02 DS02 Pouring concrete 

76003 2020 09 03 DS02 Removing wood forms from excavation 76003 2020 09 03 DS02 Using shop vac to clean concrete debris

 

August 28, 2020 -- MamaJo us approaching main street this week. It was full steama ahead for work in the tunnel and at construction sites around the city.  Here are update photos from the week.

Rock being pulled from the tunnel looks to be piling up -- but it's being used on project around the community.  The work on Superior Street has already used more than 2100 cubic yards of the rock. (Aug 28, 2020)

Roack pile August 27 2020

In these photos for drop shaft six (Camp Allen Drive) you see continued construction of the drop shaft and where the pipe will connect to take combined sewage into the shaft and down to the tunnel. (Aug 28, 2020)

Drop Shaft Structure at DS 6 votex coming soon Aug 27 2020 76003 2020 08 26 DS06 Poured concrete 1   

The first photo below shows the liner at drop shaft 7 (Guldlin Park). The second shows the large excavaction where drop shaft 12 (East Central Park) will be built.  The photo shows the work mat that will soon be filled with reinforced steel and the forms needed for construction. 

76003 2020 08 26 DS07 Hardman starting ring beam DS 12 aug 27 2020

August 20, 2020 --  A day to Celebrate!  MamaJo is half way through her journey.  At 3:45 a.m. today (August 20) she hit the halfway point between the Norfolk Southern RR Bridge and the Van Buren Street Bridge. Crews commemorated the event with photos of the milestone and the completion of 2,412 concrete rings.

76003 2020 08 19 tun celebrating the halfway point in the tunnel ring 241276003 2020 08 19 tun building ring 2412 halfway point in tunnel

August 18, 2020 -- Sometimes we think about MamaJo and the deep-rock tunnel and don’t realize the massive scale of projects, simoutaneously being constructed as part of our Tunnel Works program.  Drop shafts abound throughout the City at East Central, Headwaters and Guldlin Park, and neighborhood projects on Camp Allen, Thieme, Brown Street, Waldon Circle and the retrieval shaft at Foster Park.  These are the pipes that will drop flow down to the tunnel.  We also have major consolidation sewers under construction.  Pipes under construction on Third Street, Superior, and at the Rudisll/Boradway intersection will take flow to the drop shafts.  Below are 10 new photos from the various locations visible above aground.

Dropshaft 2 on Waldron Circle shows existing pipe and the work that being done that will connect flow to the tunnel. - Aug 18 posting

76003 2020 08 07 DS02 excavated and graded 1 76003 2020 08 07 DS02 excavating bottom

Dropshaft 3 on Brown street shows new pipe that will take flow to the dropshaft. Aug 18 posting

76003 2020 08 07 DS03 7 yards of concrete placed under pipe

Dropshaft 6 on Camp Allen reminds us of the vast amount of jobs the tunnel project is supporting. When all said and done – more than 4,000 workers will be involved.  Here carpenters and iron workers assist with support structures.  The second photo shows a concrete pipe installaion. Aug 18 posting

76003 2020 08 11 DS06 carpenters and iron workers working 2 76003 2020 08 07 DS06 Segment of concrete pipe put up

Dropshaft7 near Guldlin Park  -- driving sheeting. In the second photo you can see it when it's into the ground. Aug 18 posting

76003 2020 08 11 DS07 placing sheeting 1 76003 2020 08 12 DS07 sheeting near end of day 2

The road at Rudisll/Broadway is being restored – this photo shows the consolidation sewer work that will intercept multiple pipes and take the flow to the dropshaft at Foster Park. Aug 18 posting

Rudisill consolidation Sewer Project August 2020

Work on Superior Street shows the consolidation sewer that will connect to the dropshaft at Headwaters Park. Aug 18 posting

Supeior Street Consolidation project

On the northside of the river crews are busy with the Third Street pump station consolidation sewer.  They will soon be going under the river to connect to the dropshaft at Headwater Park. Aug 18 posting

Third Street Pump Station Consolidation Sewer August 14 2020

 

 August 3, 2020 – MamaJo  is close to halfway through her journey digging the deep rock tunnel. Now on the west side of the Van Buren bridge and ready to make the turn to head south toward Foster Park.  Here is a video link of continued work at drop shaft #2 and a photo below when PFW staff and students brough  visiting students from a Myanmar environmental sciences program to visit the site just of Waldron Circle.

IMG 3084

July 15, 2020 -  This past Monday (July 13) MamaJo hit the two-mile mark.  Below you can see she's now just west of the Wells Street Bridge.  Second graphic shows the distance in the context of the overall project.

Mamajo 2 mile mark July 13 2020

July 13 MamaJo distance full view

 

July 8, 2020 -- Mamajo is just under the two-mile mark, and crews recently installed a slurry pump, which is needed to pump rock back to Dwenger Avenue. You can see the pump in the photos along with the tubes carrying electricity and air and the rail track. When the tunnel is completed, these items will be removed, leaving the concrete-lined 16-foot-tunnel (pipe).

76003 2020 07 01 P2 6 install complete1 at just und 2.5 mi 76003 2020 07 01 P2 6 install complete2 Pump instal at just under 2.5 miles

June 19, 2020 - Mamajo is just east of the Wells Street bridge today.  Crews have completed 10,000 feet of concrete liner. The photo below shows R (ring) 2000. Each slab 5’ long = 10,000 feet complete. The tunnel is 41% complete today, slightly behind what was anticipated, but nearly halfway done.  Crews will shut down for several days to install an additional slurry pump that’s needed now that they are at the 10K mark.

76003 2020 06 18 tun tunnel progress passed ring 2000

May 21, 2020 - Work at Camp Allen in the Nebraska Neighborhood continues as crews install sheeting at the drop shaft. 

76003 2020 05 21 DS06 Sheeting installed on the north side of the excavation pic 1

May 07, 2020 - Crews were busy performing maintenance today.  Photo shows worker cleaning  the grout line from the day tank in MamaJo, the Tunnel Boring Machine (TBM). 

76003 2020 05 07 TBM Cleaning out grout lines from the day tank to the head 1

April 14, 2020 - Busy week at the drop shafts. The first photo shows work at the drop shaft located on the east side of the St. Marys River at the end of Waldron Circle, where crews were welding pieces of the steel liner together. The second photo is the drop shaft at East Central Park off of Combs Street and just south of the Maumee River, where crews were pouring the last portion of grouting.

76003 2020 04 14 DS02 Welding casings together 76003 2020 04 14 DS12 Truck 2551 on site for grout pour

 

April 07, 2020 - Work on the drop shaft between Brown Street and Hale Avenue is seeing progress with the drop shaft with the installation of steel pipe. This drop shaft is one of seven locations under construction. The second photo shows excavating equipment being lowered into a drop shaft at Camp Allen Drive. These shafts will deliver combined sewage to the tunnel and will keep it from discharging into our rivers.

 2020 04 07 DS03 Kokosing installing another section of pipe into the shaft2020 04 07 DS06 Mini almost ready to touch down to dig a test hole

March 30,  2020 - February saw maintenance and cutter head change outs on Mamajo -- but today she is entering the downtown area just north of the deck at Don Hall's Gas House.

Map March 30 2020 showing MamaJo Location

 

January 20, 2020 -- Mamajo has gone more than one mile at about 6,100 feet and is 200 feet down in front of the Water Filtation Plant. Neighborhood pump station shafts and consolidation sewers are also making progress.  The consolidation sewers will intercept the flow that would normally go to the river and drop it down the drop shaft to the tunnel. New photos show work two drop shafts. First two photos show work near the intersection of Thieme and Berry -- the third photo is the drop fhsaft site near Guldin park between the St Marys River and Supperior Street, just east of the Sherman Blvd bridge. 

76003 2020 01 21 Grout tubes lowered into the drop shaft at Drop Shaft 5 1  Off of Superior Site prepped to drive pile at Drop Shaft 7Off of Superior Site prepped to drive pile at Drop Shaft 7

 

December 16, -- Workers completed the 1000th concrete ring.  You can see the connected concrete liner rings beind them in this photo. 

100th Ring

 

November 19, 2019 -- At the retrieval shaft near Foster Park a dusty road get's swept and a second dewatering tank arrives and is placed in the construction zone. That tanks assist with groundwater in the shaft. 

76003 2019 11 19 RS Mess on Old Mill Road from Bunn hauling shot rock pic 2 76003 2019 11 19 RS Dust off Street Sweeper

76003 2019 11 19 RS Another dewatering tank arrived on site at 944 AM 76003 2019 11 19 RS Second dewatering tan placed on site                 

 

Novemeber 18, 2019 -- Man basket and pump ready for lowering at retrieval shaft.

76003 2019 11 18 RS Preparing to lower man basket and pump into the shaft at 906 AM


November 6, 2019 -- Mamajo made 3/4 of a mile and is at the first drop shaft located at East Central Park. Photo shows Rock Bolt installation at Retrieval Shaft. 

MamaJo reaches DS 12 3 4ths of a mile2019 11 06 RS Rock bolt 14 in Row 9

 

October 31, 2019 – Equipment being lowered into the Retrieval Shaft to assist with pump installation.

 2019 10 31 RS Stiffler and Tuwah being lowered into the shaft to install a larger pump at 833

October 23, 2019 – Crews build security fencing on the north side of the Retrieval Shaft.

2019 10 23 RS Chain link fence being installed on north side of the site

October 16, 2019 – Workers at the Retrieval Shaft (Foster Park)  are drilling a hole for dewatering services. 

 2019 10 16 RS Contract Dewatering Services drill hole for H Pile at 934 AM on north side of site

October 9, 2019 – Worker securing a rock bolt at the Retrieval Shaft.

2019 10 09 RS Pressurizing Swellex Rock Bolt 11 in Row 8

 

September 10, 2019 – Work continues at the Retrieval Shaft (Foster Park) as it continues its downward construction. Photo shows worker examining the progress at an elevation of 650.5 above sea level.

2019-09-10-RS_Standing_at_EL_650.5_looking_at_east_wall_1.jpg 

August 14, 2019 – Work is progressing at locations throughout the route.  The night photo shows crews at the pump shaft (Dwenger & Glasgow) hanging pipe brackets down the wall.  Inside the tunnel crews continue to work as MamaJo moves forward. 

2019 08 14 tunnel cutting away the brushed under segment AB at ring 3152019 08 14 tunnel cutting away the brushed under segment AB at ring 315

 

August 8, 2019 – Work continues at the neighborhood drop shafts, the shafts will intercept flow that currently goes to the river and drop it down to the tunnel.  In this photo, grouting work is going on at drop shaft 6 near the Camp Allen Drive at West Main Street.

2019 08 14 tunnel cutting away the brushed under segment AB at ring 3152019 08 14 tunnel cutting away the brushed under segment AB at ring 315

July 25, 2019 – MamaJo under the Maumee near the Hosey Dam today.   Several members of the media visited to observe the progress.

WPTA Chad Video IMG 6265 WANE and NPR reporters July 25 Stephen july 25 2019

July 13, 2019 -  Above ground photo shows concrete liners in the distance and inside MamaJo you can se the liners going in place.

76003 2019 07 12 main site picking segments to lower into working shaft 76003 2019 07 13 tunnel assembling ring 214 

July 9, 2019 - Worker being lowered into the 65-foot diameter pump station shaft and photo of Mamajo's used cutterheads and new ones that will be used to continue cutting through the bedrock. 

76003 2019 07 09 pump shaft electricians hanging new electrical cables down the side of the shaft 76003 2019 07 09 tunnel new and removed cutter wheels

July 8, 2019 -- Rock removed after blast at retrieval shaft in Foster Park.

76003 2019 07 08 RS Shotrock removed from the Retrieval Shaft 3rd round blast

July 5, 2019 -- Photos below show sections of the concrete liner in place, pieces of liner ready for installation and a view inside MamaJo. 

From the catwalk looking down the line with TJCU of concrete liner connection rev lining pieces Looking down Mamajo Aisle

 

June 26, 2019 -- Work is simultaneious throughout the route of the tunnel.  From working shaft at Dwenger Avenue to the drop shafts along the five mile route to Foster Park -- site of the retrival shaft pictured below. 

June 26 RS Conditions at the bottom of the Retrieval Shaft at 707 AM

June 25, 2019 -- Installing rail system extension. 

June 25 tunnel bolting in a new rail assembly section

June 24, 2019 --  As MamaJo moves further away from the Working Shaft --  the rails system is essential to take workers to their daily job. The bottom photo shows a flatbed with concrte tunnel lining segments. 

June 24 train in tunnel

June 24 lining pieces on flatbed

June 22, 2019 -- Photo below is looking down the drop shaft located at Headwaters Park West.  There are 7 dropshafts along the five mile route of the tunnel.  Drop shafts will deliver combined sewage to the tunnel where it will flow to the wastewater plant for treatment. It keeps the combined sewage out of the river. 

June 17 ds9 shaft water

June 20, 2019 -- Follow MamaJo's story on the new Story Map. Cleic this link MamaJo Story Map

June 18, 2019 -- What does the reconstruction of Huffman Street, just off Wells, have to do with the tunnel?  The stone crushed and pulled out of the tunnel by MamaJo is the perfect fill for a road project and prevents us from spending extra to buy the fill rock. Huffman had a sewer separation project and this week; crews are reconstructing the street that was torn up for restoration. The first photo is looking west from Wells Street, and the second is looking east from Short Street.

 Huffman sewer sepaaration restore w tunnel stone 1

Huffman sewer sep restore w tunnel stone 2 looking east

 June 14, 2019 -- Photos show the additional slurry circuit installed and the segments being delivered via rail car into the tunnel for unloading. 76003 2019 06 14 Draining trombone to add additional slurry circuit pipe 4 76003 2019 06 14 Pushing the segments on rail car into the tunnel for unloading 3

June 13, 2019 -- Permeneant vent line was installed and is now connected to the gantry 12 (end of MamaJo, the Tunnel Boring Machine).  

76003 2019 06 13 Permenant vent line installed and running and connected to gantry 12 1

June 6, 2019 – MamaJo workers are extending the slurry lines and isecond photo looks down working shaft as final piece of MamaJo is in place. (photos at working shaft - Dwenger Avenue)

76003 2019 06 06 tunnel extending the slurry lines 76003 2019 06 06 working shaft gail end of gantry 12 visible in shaft

 

June 4, 2019 - Worker inside MamaJo installs segment ring in tunnel at Dwenger Avenue.

76003 2019 06 04 tunnel intalling a segment for ring 68

June 3, 2019 – First holes being drilled at Foster Park retrieval shaft.

76003 2019 06 03 First holes being drilled in the Retrieval Shaft for blasting

 

May 30, 2019 Lots of work going on around town -- below truck dlivers equipment to retrieval shaft at Foster while  crews are lining the drop shaft at Camp Allen, just south of Main Street in second photo.

76003 2019 05 30 RS Bunn Trucking delivering equipment to the Retrieval Shaft site Camp Allen Drop Shaft being LIned

 

May 29, 2019 - Workers scaling retrieval shaft walls at the Foster Park location.

76003 2019 05 29 RS Scaling Retrieval Shaft walls at bottom of Retrieval Shaft

 May 9, 2019 - Work continues as MamaJo moves forward to continue adding on the additional gantries. This week's photos show crews connecting Gantry 6 and the unloading of additional liner segments. 

76003 2019 05 08 Gantry 6 Working on Electrical Connections 1 76003 2019 05 08 Unloading Segments

 

April 19, 2019 -- MamaJo's first cut into bedrock.  Click on this link to see sheared rock coming out. MamJo's first cut into bedrock April 19  Click on this video for animation Animation shows cutterhead working

 

April 15, 2019 -- Gantries move the concrete liner pieces forward on a conveyor.  Each piece will be attached amd connected to make a ring.   Click on this link to vide annimation of how it works. Animation - How segments connect

2019 04 15 Gantry 4 Segments Staged 1a

April 1, 2019 -- View of iner pieces #2 and 3 are attached. These are the precast concrete ppieces we tshowed in earlier photos. Once attached, they have an inside diameter of approx. 16-feet. 

2019 04 01 Ring 2 and 3 are connected

March 27, 2019 -  Photo below shows first liner pieces being connected. Crews are working in the Tunne Boring Machine. 

1st liner pieces installed l3 27 19

March 20, 2019 -- Photo below shows the gantries placed in the pump station area.  The pump station is just east of the working shaft where parts of Mamajo are already connected. Gantries house the segment feeder to transport the concrete liner pieces forward for installation.  Gantries also house the slurry pump, control cabinet, the bentonite supply system and hydraulic pumps.

2019 03 20 Pump Shaft Gantries in Standby 1

March 12, 2019 -- Photo below shows three parts of Mamjo connected and preparing for the five mile journey. 

Mamjo showing length in Tunnell Mar 12 2019

February 11, 2019 - Last week two pieces of Mamajo were send down the working shaft.  The photo below shows the machine after some of the connections were placed. 

Shot looking at connections Feb 5 2019

February 4, 2019 -- Construction crews began lowering MamaJo through the working shaft on Dwenger Avenue.  High winds and sub-zero temperatures delayed lowering Mamajo, because of the weight of the cutterhead – 200 tons.  Finally, Mamajo was lowered down the 220-foot working shaft.  Here are two videos of the lowering and a photo below.  Click: MamaJo lifted to begin journey  Click:  Mamjo sits over Working Shaft before lowering

TBM Lowered into WS April 4 2019

December 18, 2018 -- Work continues on getting Mamajo ready to dig.  This photo shows the concrete linner pieces that will be instlaled as Mamajo progresses. The 5X7 foot pieces connect to become the tunnel liner. 

Linter pieces Dec 18 2018

October 25, 2018 -- Work continues at the working shaft and pump station shaft as well as the neighborhood drop shafts.  All but one of the drop shafts are under construction.  This photo shows the equipment in place at the intersection of Berry and Thieme.

.West Central 2

September 21, 2018 -- Work is beginning on the drop shaft in west central this week. Six of the seven neighborhood drop shafts are now under construction.   CLICK here to see VIDEO of recent MamaJo tour 9-9-18

 

September 10, 2018 -- A message from MamaJo:  "Thanks to all of you who came out to meet me on Sunday, September 9 -- and gosh there were a lot of you.  I'll NEVER remember all your names. You might have had to wait a long time to see me, but I hope it was worth it and that you didn't get too cold.  I've heard it can get really cold here in the winter so I'm looking forward to going underground before winter weather hits.

If you had your picture taken with me, please click here to download photos.  Our photographers are uploading the photos today and it may take a little time, so please be patient.  Thanks again for visiting me and I'm looking forward to keeping you updated as I prepare for my undergound journey." 

Jacobs teamJoe and AM

September 7, 2018 -- MamaJo is ready for visitors on Sunday May 9 from 11 a.m. to 3:00 p.m. The tour takes about 35 minutes. Please -- no flip-flops. The tour will be by trolley with three stops. It takes about 35 minutes.  Parking is in front of the Pollution Control plant near the trolley boarding area. 

MamaJo WS a

August 31, 2018 -- Tour MamaJo on September 9.  Crews are working to get her ready for your visit.  Also, crews are busy working on drop shafts near Headwaters Park West and near Guildon park. Clik on the links to view videos. 

Prepping Mamajo,  Drop Shaft at Michaels Ave - Gilden ParkFlyover view of MamaJo

August 7, 2018 - Today City Utilities unveiled the name for the 400-feet long Tunnel Boring Machine – MamaJo! Voting was cast earlier this year and the name, MamaJo won with more than 43% of the vote. In addition, you will be able to see MamaJo in person! On Sunday, September 9, from 11:00 a.m. to 3:00 p.m. at the working shaft site near the intersection of Dwenger and Glasgow Avenue, City Utilities will be hosting tours of the site. More information to come.

 
July 26, 2018 - The working shaft is down about 220 feet this week and pump station shaft about 190 feet.  The neighborhood drop shafts are seeing a lot of acitivity and will be busy next week. At  Hale Avenue crews will begin phase III lining,  Camp Allen is at phase II - augering thorugh rock and the steel casing insertion will continue at East Central Park. View work at shaft site
 
July 18, 2018 - This week the tunnel working shaft is about 198 feet down and the Pump Station Shaft 173 feet down this week. The final destination is around 220 feet down. Work continues at a third neighborhood drop shaft near the intersection of Coombs and Cochran Street where a 50-ton steel casing (drop shaft liner) spanning 80 feet in length and 12 feet in diameter was delivered late last week.  Click to see casing crossing Tecumseh Bridge
 
July 18, 2018 - This week the tunnel working shaft is about 198 feet down and the Pump Station Shaft 173 feet down this week. The final destination is around 220 feet down. Work continues at a third neighborhood drop shaft near the intersection of Coombs and Cochran Street where a 50-ton steel casing (drop shaft liner) spanning 80 feet in length and 12 feet in diameter was delivered late last week.  Click to see casing crossing Tecumseh Bridge
 
July 11, 2018 --  Work will begin next week at the drop shaft just south of the Maumee River at River City.  The working shaft is about 180 feet down and the Pump Station Shaft 160 feet down this week. Click on this link Cutterhead in action -- to see the Tunnel Boring Machine being tested at the manufacturing plant in Germany.
Rock Pile July 10 2018
Rocks pulled from the tunnel drop shafts
 
June 29, 2018 -- Tunnel segments were constructed to build the first test ring for inspection.  This will be the 1-foot diameter interior wall of the tunnel. 

piecesCircle

 

 

 

 

 

 

 

June 22, 2018 --  Progress continued at the two neighborhood drop shaft sites and at the working shaft sight.  Late in the week, heavy-rain slowed the project.  Click for aerial view of work near Water Pollution Control Plant.
 
June 15, 2018 -- The Drop Shaft at Camp Allen, near Main Street and the St. Marys River, is moving along.  This week a 50-ton casing was installed. Click here for video of Camp Allen Casing
 
TBM Police Escort 2
Pieces of the Tunnel Boring Machine arriving with police escort
 
June 8, 2018 --The working shaft and the pump station shaft are progressing on Dwenger Avenue.  The working shaft is at about 130 feet and pump station shaft is about 120.  Click on this link showing aerial video of the progress.
The Drop Shaft on Brown Street is under construction. Click to see the 50-ton, 70-foot casing at Brown Street.  It will collect combined sewage and drop it to the tunnel -- keeping it out of the St. Marys River. 
Work at Foster Park will begin again in September.  Equipment being used at the Pump Shaft will be moved to Foster for that work.