- Client:Missouri Department of Transportation
- Location:St. Louis, Missouri, USA
- Contract Amount:$110,900,000
- Project Size:2,615 feet
- Contract Type:Design-Build
- Markets Served:Civil
- Architect/Engineer:Burns & McDonnell
Alberici, with joint venture partner Walsh Construction and design partner Burns & McDonnell, are the design-build contractor for the new I-64 Daniel Boone Bridge project.
The project includes a new bridge on I-64 over the Missouri River between St. Louis and St. Charles Counties, replacing the deteriorating bridge built in 1935. This project also includes a shared-use path connecting the Katy Trail with the Monarch Levee Trail and the addition of a fourth travel lane.
The new bridge will measure 2,615 feet with a main navigational span of 510 feet and two intermediate back spans of 370 feet. It is a parallel flange plate girder design with flexibility to add a fifth vehicular lane in the future. Walsh/Alberici and Burns & McDonnell’s design will significantly reduce maintenance costs during the 100+ years of expected service life.
Notable construction quantities include 5,850 tons of weathering steel girders and 12,800 cubic yards of concrete with 1,920 tons of reinforcing steel. The construction team will build cofferdams to allow for construction of three bents in the dry; the other seven bents will be constructed on land or in a temporary causeway.
The construction approach maintains all travel lanes during peak travel hours for the duration of the project, which is targeted to be complete on December 31, 2015.