Route 9 in the northbound direction was closed after several vehicles crashed between exits 12 and 15.
The crash was reported around 5 p.m., and the road reopened around 6 p.m. However, congestion lingered for the evening commute.
Traffic cameras showed the backup going on for several exits right after the crash.
Police have not released any information on injuries.
Stay with FOX 61 as the story develops.