UPDATE: ROADS have reopened following an accident which caused heavy delays for motorists in Coburg this afternoon.

Services on the Upfield line are also running again and buses are no longer replacing trains between North Melbourne and Upfield.

Earlier, a train smashed into a semi-trailer after it became stuck on railway tracks in Melbourne’s north.

The citybound train clipped the back of the trailer, at Bell Street in Coburg, near the Coburg Railway Station at 12:45pm.

Bell Street, Coburg reopened shortly before 3pm.

No one was injured in the incident, with only superficial damage to the truck and train reported.

The train and track will be assessed by an engineer before it can be moved.

Paramedics assessed two people at the scene, including the truck driver and a passenger on the train.

Upfield line: Major delays for some services Nth Melbourne - Upfield due to a train hitting a vehicle. Pls listen for announcements. — Metro Trains (@metrotrains) April 5, 2017

There were no reported injuries and neither of the people required treatment, an Ambulance Victoria spokeswoman said.

Earlier, Bell St was closed at Coburg Rail Station, between Sydney Rd and Main St.

Alternate route Gaffney St and Moreland Rd.

Metro said buses were replacing trains from North Melbourne to Upfield.

Avoid the area heavy traffic long delays.

More soon.

A truck has collided with a train in Coburg. A person is being assessed for minor injuries. Buses replacing trains North Melbourne - Upfield pic.twitter.com/9Ub4Sdl2TY — 7 News Melbourne (@7NewsMelbourne) April 5, 2017