Work on the Route 100C bridge over the Sprain Brook Parkway will cause lane closures and detours beginning Monday.

All eastbound lanes on Grasslands Road over the bridge will be closed to traffic, with detours onto Route 9A, Brighton Avenue and Route 100.

No westbound lane closures are planned during the project.

The bridge work is expected to last through August 30.

Residents should expect traffic delays and use alternate routes whenever possible.

Lane Closures, Detours Begin Monday For Route 100-C In Mount Pleasant | The Chappaqua Daily Voice.