PROJECT: River Des Peres and I-44 bridge deck – St. Louis
Contractor: Kozeny Wagner
The bridge deck replacement of eastbound I-44 over River Des Peres was necessary due to the increased traffic load during the I-64 reconstruction. The Missouri Department of Transportation had a very aggressive schedule on this reconstruction project which required the contractor to work long hours and some weekends. Due to the size of this deck, the contractor opted to start the concrete placement on a Friday evening at 5 pm. 1,540 cubic yards of concrete was required for the new bridge deck and was placed at a maximum rate of 120 yards per hour until the pour was complete.
PROJECT: St. Louis – Grand Avenue Viaduct
The St. Louis Grand Avenue Viaduct over Mill Creek Valley expands 1165 feet. The new bridge is 16 feet wider, has 4 lanes of traffic, dedicated Metro Link lanes, 12-foot wide sidewalks and includes a 9-foot-wide-irrigated median.
Completed in 2012, this $27 Million project certainly met its challenges along the way. These challenges required soil stabilization and innovative design of specialized drilled shaft concrete. Structure concrete totaled around 5000 cu.yds. while the pavement, bridge deck, and sidewalks totaled around 7000 cu. yds.
Bridge deck utilized the new Modified B-2 mix in common use throughout the St. Louis area and well as the newer pavement types and requirements implemented by MoDOT since 2008.