A Joint Venture that included Millstone Weber was selected in early 2013 for the design-build contract to construct Route 364 Phase 3. This project involved construction of the Route 364 extension from the end of Phase 2 on the east to I-64 on the west. This design-build project consisted of 17 bridges, 15 MSE walls, 9.5 miles of grading and pavement and 4 major intersections. The project team developed many innovative concepts to increase value for MoDOT as well as decrease traffic disruption to improve the overall MOT. For example, the team’s design utilized the existing Route N bridge to make the Route 364 tie-in to I-64/Route N rather than constructing a new flyover ramp, which was in MoDOT's original proposal. As a result, this practical design approach allowed for significant scope to be added elsewhere on the project. In addition, the new Bryan Road bridge over proposed Route 364 was actually built to the west of existing Bryan Road instead of keeping the current alignment. This allowed traffic to remain on the existing Bryan Road alignment during the 5-month construction of the new bridge. Once the new bridge was complete, the tie-ins were made to existing Bryan Road (north and south of the bridge) with minimal disruption to traffic.
The project is substantially complete with all lanes of Route 364 Phase 3 open to traffic. The first half from I-64 to Route K was completed in early October of 2014, and the second half, Route K to Mid Rivers Mall Drive, opened on November 2, 2014.
Throughout the life of the project, Millstone Weber worked with members of MoDOT’s project team on innovative traffic control ideas and phase changes, as well as numerous equal or better change proposals and value-engineering concepts to improve the project’s safety, schedule and budget.
Minor work continues including fence installation, tree planting punch list and cleanup, as well as traffic camera
s and message board installation for ITS improvements.
"They (Page Constructors) came back with a great project. An added benefit is that the jobs out here will go to people in this region and the money will stay here. I couldn’t be happier." - Steve Ehlmann St. Charles County Executive