Route 154 in Old Saybrook was closed Sunday morning after a crash involving a motorcycle and another vehicle.
The crash happened around 8:30 a.m. near the Route 9 on-ramp between Essex Road and Christy Heights Road, according to the state Department of Transportation.
Police were still at the scene reconstructing the accident at noon and the road remained closed.
There was no word on injuries.
Police are asking anyone who may have witnessed the crash to call them at 860-395-3142.