Metra will be closing St. Mary’s Road to through traffic from IL 137 to IL 176. The closure will begin at 6 a.m. on Wednesday, Aug. 8 and is scheduled to reopen the afternoon of Monday, Aug. 20. The closure is necessary to improve ride quality at the existing railroad crossing. This project will include replacing the crossing surface, asphalt and concrete milling, repaving and striping.Local traffic will be allowed from IL 137 south to Thornbury Lane/Greenbriar Drive and from IL 176 north to Minard Lane. The railroad crossing will be closed to all traffic. The signed detour route will be ILL Route 176 to ILL Route 21 to ILL Route 137.