(LANSING) – The first of two projects to fix railroad crossings in Three Rivers is set to start today.

The Michigan Department of Transportation says they will be closing M-86 or South Main Street, to allow crews to safely reconstruct two Norfolk Southern Railroad crossings.

The first crossing to be reconstructed is between Pearl Street and Michigan Street. Crews are expected to start work today, with the project being completed on Sunday, October 27.

The next reconstruction will be the crossing between Lutz Road and 8th Street. Work on that crossing is expected to start on Monday, October 28 and be completed by Monday November 4.

MDOT officials say the new crossings will be smoother, improving travel speeds and safety. A detour route will be posted on East Broadway Street, 8th Street and M-86.