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.

Workers TBM 1

Side view of front of machine

fence lift