LANSING, Mich. (AP) — While the Michigan Legislature debates how to put an additional $1.2 billion annually toward repairing roads, the state may also be facing another looming transportation funding crunch as congestion grows on some of the state’s major thoroughfares.

The U.S. Department of Transportation projects the country will face a growing gridlock crisis as the amount of commuter traffic increases.

Meanwhile, it’s estimated an additional $1.2 billion is needed annually just to preserve Michigan’s deteriorating highways, but even that boost likely wouldn’t do much to help ease traffic congestion.

The Michigan Department of Transportation has been working on projects around the state to ease traffic congestion and has plans for several major projects in coming years, including on the busy US-23 corridor between Brighton and Ann Arbor and along I-94 in Detroit.