A tanker truck carrying methane gas rolled off the side of Route 2 in Orange Friday night, killing the driver and causing the road to be shut down into Saturday afternoon, according to State Police.
The roadway reopened at about 1:45 p.m. Saturday, more than 16 hours after the truck crashed on the westbound Exit 14 ramp at about 9:30 p.m. Friday, State Police said in a statement.
The driver, who is from out of state, has not been publicly identified, State Police spokesman David Procopio said.
The incident triggered firefighters to evacuate several residences and establish a half-mile “safe zone” around the site as the volatile compound was thought to be leaking onto the highway, State Police said.
A hazmat team deemed the area safe at about 3 a.m., according to State Police, but the highway between exits 13 and 15 remained closed in both directions as representatives from the company involved determined how to deal with the gas.
The exit where the truck crashed is expected to stay closed into Sunday as repair and cleanup continue, State Police said in the statement.
The cause of the crash is under investigation.
Sofia Saric can be reached at firstname.lastname@example.org. Follow her on Twitter @sofia_saric. Lucas Phillips can be reached at email@example.com. Abbi Matheson of Globe Staff contributed to this report.