US-31 US-31 over pine river

The Federal Highway Administration (FHWA) awarded $675,000 to the Michigan Department of Transportation (MDOT) on June 23, 2025, under the Highway Planning and Construction program (CFDA 20.205) to modernize the Charlevoix Bascule Bridge control systems at the US-31 crossing over Pine River in Michigan. The project involves installation of a programmable logic controller (PLC) system, operator console, PLC processors, computer hardware, and associated electrical components to upgrade the bridge's operational infrastructure. Additionally, the award funds removal and replacement of existing motors and drives to support the bridge's bascule mechanism functionality.

This formula grant supports critical bridge infrastructure preservation and modernization activities consistent with the Highway Planning and Construction program's mandate to assist states in improving and maintaining highway and bridge assets. The project addresses aging infrastructure on a significant state transportation corridor and represents the type of capital preventative maintenance and structural modernization work that MDOT routinely executes through federal highway funding mechanisms.

Project description

Install PLC system, operator console, PLC processors, computer and other electrical components. Remove and replace existing motors and drives. US-31 over pine river, SN 1471, charlevoix bascule bridge