Updated Oct. 9 at 3:10 p.m.
Highway 144 had reopened in Chelmsford as of about 12:30 p.m. Wednesday, according to the OPP.
Sudbury OPP and emergency services are responding to a collision on Highway 144 in Chelmsford.
The collision occurred between Municipal Road 15 and Michael Street and the roadway is blocked at this time.
No injuries have been reported at this time, check back with Sudbury.com for updates as more information becomes available.