Location: Louisiana, Missouri and Pike counties, Illinois
The Missouri Department of Transportation (MoDOT), in cooperation with the Illinois Department of Transportation (IDOT), selected the design-build delivery method to replace this aging Mississippi River bridge. Our experience on 15 major river crossings and previous work on the U.S. 69 Missouri River Bridge for MoDOT added considerable value to the development of proposal documents, agency coordination, and design and constructability reviews.
The procurement phase included site survey, Americans with Disabilities Act (ADA) compliance and sidewalk analysis, right-of-way investigation, deep foundation geotechnical borings, boundary survey, hydraulic and scour studies, U.S. Army Corps of Engineers (USACE) Section 404 and 408 permit coordination, vessel collision analysis, preliminary bridge layouts, structure types, cost estimates, RFQ and RFP document development, and evaluation of proposer submittals.
The design phase included plan reviews for conformance to AASHTO and MoDOT/IDOT design guidelines and contract requirements, and environmental compliance reviews. The construction phase includes oversight and constructability reviews of plans, review of requests for information, field design changes and non-conformance reports and repairs.
All phases have required close coordination with numerous stakeholders, including IDOT, the Sny Island Levee Drainage District, USACE, U.S. Coast Guard, Illinois and Missouri Departments of Natural Resources, BNSF Railway, the City of Louisiana, and Two Rivers Marina operating as a lease concessionaire on USACE property. The team has also helped MoDOT maintain and control critical documents and produce a monthly project newsletter to support stakeholder communications.
Preliminary bridge layouts and cost
Preparation of right-of-way plans
Utility investigation and coordination
Federal and state permitting
Proposal document development
Design plan overview
Construction phase support
Geotechnical investigation and seismic site assessment