Monday, July 10, 2017

I-70 2014 Stan Musial Bridge over Mississippi at St. Louis, MO

(Bridge Hunter, John A. Weeks III3D Satellite)

The official name is the Stan Musial Veterans Memorial Bridge. (During the planning stage it was named the Ronald Wilson Reagan Memorial Bridge on August 28, 2005.) The Popular Street Bridge used to carry the traffic of I-55+I-64+I-70. Of course, it was congested. So a new road with a new bridge was built between 2010-14 to remove the I-70 traffic from the Popular Street Bridge. The plans include a second span that should be built when more funding becomes available. (It was Missouri, not Illinois that was reluctant to fund the bridge. It is good that they got at least one span built before Illinois politicians could not agree on a state budget for over two years.) At 1500' with 400' towers, it is the third longest span in the United States. (The original proposal would have had 510' towers on the shores with a span of 2000'.)  [WeeksIII]

Wliliam A. Shaffer added
The Stan Musial Bridge at St. Louis, MO
This was one of the first times I photographed the Stan Musial Bridge. (Photo by William A. Shaffer)

William posted again
The Stan Musial Bridge at St. Louis, MO (5.12.15)
(Photo by William A. Shaffer)

William posted again
Stan Musial Bridge at St. Louis, Missouri (5.11.13)
(Photo by William A. Shaffer)
William A. Shaffer posted
Stan Musial Veterans Memorial Bridge - St. Louis, MO (1.06.15)
(Photo by William A. Shaffer)

John A Weeks III
Planned bridge with two parallel spans:
John A Weeks III
HNTB
"The third-longest cable-stayed bridge in the United States."

Massman Construction Co. posted

Massman's project web page contains three photos with the comment:
A Massman-led joint venture constructed this award-winning $230MM cable-stayed bridge across the Mississippi river in St. Louis, Missouri. This project was completed for Missouri Department of Transportation on budget and schedule. The cable-stayed portion of the project consists of a 1,500 foot long main span (the third longest in the US) with two 636-foot long end spans. Each of the two main (river) piers are founded on six 11-foot, 6-inch diameter drilled shafts with 11-foot diameter rock sockets. The 400-foot tall delta shaped piers support the superstructure with 34 pairs of stay cables. The bridge carries two lanes of Interstate 70 traffic each way between downtown St. Louis and the Metro-East. 
Project Awards:
2016 American Society of Civil Engineers (ASCE) Outstanding Civil Engineering Achievement Award Finalist 
2016 American Institute of Steel Construction (AISC) Prize Bridge Award - Major Span
2016 American Council of Engineering Companies (ACEC) Missouri Champter Grand Receptor Award of Merit
2015 National Council of Structural Engineers Association (NCSEA) Excellence in Structural Engineering Award
2015 American Council of Engineering Companies (ACEC) Missouri Chapter Grand Conceptor Award
2015 American Council of Engineering Companies (ACEC) Illinois Chapter Eminent Conceptor Award
2015 American Council of Engineering Companies (ACEC) National Honor Award
2014 Missouri Department of Transportation (MoDOT) Top Achiever Award - Heavy Volume Category
2014 American Association of State Highway Transportation Officials (AASHTO) Top Ten Project
2014 American Association of State Highway Transportation Officials (AASHTO) National Transportation Awards Finalist
2013 Missouri Department of Transportation (MoDOT) Top Achiever Award - Heavy Volume Category
2013 Missouri Department of Transporation (MoDOT) Top Achiever Award - Specialty Contractor 
2012 Missouri Department of Transportation (MoDOT) Top Achiever Award - Heavy Volume Category
 2011 Missouri Department of Transportation (MoDOT) Top Achiever Award - Heavy Volume Category
2010 Missouri Department of Transportation (MoDOT) Top Achiever Award - Heavy Volume Category
1

2

3

Massman's project web page contains seven photos with the comment:
Massman Construction Co. led a joint venture on this large project for the Missouri Highway and Transportation Commission. This project was the cable-stayed main span for the New Mississippi River Bridge at St. Louis. The bridge carries two lanes of Interstate 70 traffic each way between downtown St. Louis and the Metro-East.
The cable-stayed portion of the project consists of a 1,500 foot main span (the third longest in the U.S.) with two 636 foot end spans. Each of the two main (river) piers are founded on six 11-foot 6-inch diameter drilled shafts into bedrock. The two end (land) piers feature four 10-foot diameter shafts. The footings, pier shafts and the first two lifts of the tower concrete are solid and considered mass-concrete, subject to thermal control measures to prevent the concrete from cracking. Massman provided innovative alternative technical concepts for the project that resulted in significant cost saving by increasing the size and reducing the quantity of drilled shafts used for the bridge piers.
The thermal control consisted of running water through cooling pipes embedded in the concrete and insulating the forms and tops of each pour until the center of the concrete had cooled within the acceptable temperature difference limit with the outside surfaces. A concrete mix utilizing 70% blast furnace slag was used to minimize the heat of hydration of the concrete and minimize the duration of thermal control.
1

2

3

4

5

6

7



The $230m bridge "entailed construction of a 1,500-foot main span with 400-foot towers. The total length of the improvement was 1.22 miles. The work included 12 drilled shafts (11 feet, six inches); 38,225 cubic yards of substructure concrete; 9,446 cubic yards of superstructure concrete (pre-stressed slab panels); 8,188 tons of fabricated structural steel; 1,257 tons of stay cable strand; and 7,563 tons of reinforcing steel." [Traylor] The total project was significantly more because a lot of approach work was needed to move I-70 from the bridge that also carried I-55 and I-64.
(new window)



No comments:

Post a Comment