(KMOV) -- Work will begin Monday night to replace aging water mains along Manchester Rd in West St Louis County.
The one-year project will close lanes on Manchester during overnight hours between Henry and Old Ballwin Road.
The water mains being replaced are between 70 and 100 years old and have broken in recent years.
The project is costing Missouri American Water $5 million.
Work will take place every night between 8:30 p.m. and 6 a.m.
The utility says the work is being done overnight to reduce the impact on drivers and businesses.