The 11th Street Bridge crosses the Union Pacific Railroad (UPRR) tracks and North MacArthur Drive in the City of Tracy. 11th Street is one of the City’s main east-west corridors that serve local, truck and commuter traffic. Originally built in 1936 as a two-lane facility, the bridge was later widened to four lanes (two in each direction) in 1960. The condition of the bridge has deteriorated with time and needs replacement in order to meet the latest structural and seismic requirements.
The City awarded a construction contract to a joint venture of Tiechert/MCM on March 17, 2015 in the amount of approximately $32 million for replacement of the bridge. Construction began in April 2015 and is expected to conclude in late 2017.
The project consists of replacing the existing 1,441 foot long bridge with a shorter structure in combination with construction of retaining walls and embankment fill at the approaches. In order to minimize impacts to the public during construction, a two-lane temporary bridge on the south side of 11th Street will be constructed as a traffic detour. The temporary bridge will allow the City to keep access open during the bridge replacement. However, alternative routes are recommended to drivers to avoid any travel delays. In addition to the new bridge work, modifications will be made to the signalized intersection of North MacArthur Drive and 11th Street, and existing utilities will be relocated.
Once constructed, the new bridge will include the following improvements:
• Two 12 foot wide through traffic lanes in each direction
• A four foot wide median
• Eight foot wide shoulders that will serve as Class II bicycle lanes
• Eight foot wide separated sidewalks on each side that will be protected with traffic side barriers