Construction is under way and on schedule for the new Route 100 Bridge Replacement Project over Interstate 44 in Franklin County.

Currently, crews are preparing to set the bridge girders next week.

The Missouri Department of Transportation will close all westbound lanes on I-44 between the Gray Summit exit and the Washington exit from 10 p.m. Monday, July 9, until 5 a.m., Tuesday, July 10.

During the interstate closure, motorists wanting to go westbound on I-44 are urged to use I-270 to Route 30 to access I-44. Local traffic can detour to Route 100 in Gray Summit, then Route MM, then Route T to get back to Route 100 to access the interstate. There will be detour signs to help direct motorists.

MoDOT will also close one lane on eastbound I-44 between the Gray Summit exit and Washington exit the night of July 9 from 10 p.m. to 5 a.m., Tuesday. Two eastbound lanes will remain open in this section. However, all lanes on eastbound I-44 will close approximately five different times for up to 20 minutes each throughout the night while crews set the bridge girders.

During these various lane closures, motorists wanting to head on eastbound I-44 are urged to use Route 30 to I-270 to avoid traffic delays.

All lanes on Route 100 (also known as Old Route 66) over Interstate 44, where the previous bridge was located, will remain closed for 24 hours every day until mid-August.

This construction project will replace a deteriorating bridge on Route 100 (also known as Old Route 66) over Interstate 44 located between the Gray Summit and Washington interchanges.

This new bridge will provide a safe structure for many years and reduce maintenance costs on the existing structure, which meets MoDOT’s goal to keep bridges in good condition. Construction is expected to be complete by mid-August 2012. MoDOT is working with the schools to work around their spring and fall sessions. This bridge replacement project was awarded to Fred Weber Construction for approximately $1.3 million.

MoDOT urges motorists to watch for orange signs and workers. Slow down and be alert. “Don’t Barrel Through Work Zones.”