The Route 15 on-ramp to Interstate 91 northbound was closed in Meriden because of a car fire, but it reopened around 11 a.m.
The Department of Transportation said it happened near exit 67 on Thursday morning.
The right lane of Route 15 northbound was also blocked between exits 67 and 68.
Drivers were urged to take Route 5 in Wallingford or Meriden as a detour.
There's no word on injuries or what caused the fire.
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