Michigan Department of Transportation

M-231 over the Grand River

Grand Haven, MI

The Michigan Department of Transportation (MDOT) needed to relieve the significant congestion and traffic capacity issues of the existing draw bridge crossing over Grand River.

Benesch provided inspection services for the construction of this new 3,708-foot-long and much-needed second bridge crossing, as well as 1.2 miles of new concrete roadway with wetlands adjacent to the project site. In addition to the deep cofferdams that were carefully installed, portions of the 12,000 cubic yards of superstructure required thermal management due to size and internal temperatures.

This project also included drainage upgrades and construction of retaining walls and storm water detention basins.

Project highlights

  • Construction of new roadway over river
  • Over 12,000 cubic yards of substructure placed
  • Addition of a 14-foot-wide multi-use lane added to the substructure that was decided mid-project