JEFFERSON COUNTY — Motorists traveling on I-57 through Jefferson County should expect bridge construction to start south of Mt. Vernon this week.

IDOT says starting tonight, weather permitting, work will begin on the bridges near milepost 85 between Mt. Vernon and Ina. The contractor will be allowed to close one lane of traffic on the interstate between 7 p.m. and 7 a.m. for patching and shoulder work. All lanes will be open during daytime hours, and lane shifts will be used to facilitate construction of the new bridges.

Travelers in the area should reduce speed, be alert for equipment and workers, and use extreme caution when traveling through the area. To avoid delays, motorists can also seek an alternate route. Emergency vehicles will be allowed through the work zone as quickly as possible.