They are maintained by the Michigan Department of Transportation, and the bascule portion is currently the oldest of Bay City's four modern drawbridges.

[2] Heading east, the West Channel bridge is a fixed metal continuous deck stringer (Multi-Beam) bridge carrying M-13/M-84 from the western shore of the river to Middle Ground Island.

The East Channel bridge is a small drawbridge carrying the road from the island to the eastern shore of the river.

[5] The 1987 rehabilitation replaced nearly all the superstructure, substituting welded girders for the original riveted ones.

[7] Another extensive rehabilitation project is planned to Start in November 2024 That will Cost Michigan Department of Transportation 112 million and will be closed for 3 years