PORTLAND — Rail materials have arrived at the Read Street crossing and traffic is being detoured. The rail work train will continue on to its last stop of the day – the Walton Street crossing a few hundred feet away.

Work will stop for the night and resume after 9 a.m. on Friday at the Woodford’s Corner crossing, transportation officials said.

5:04 p.m.

PORTLAND — The Allen Avenue train crossing and Morrill’s Corner are now open to traffic.

The rail work train will continue on to the Read and Walton crossing, arriving between 5 and 6 p.m.

4:55 p.m.

PORTLAND — Rail materials have arrived at the Allen Avenue Crossing and traffic is being detoured.

The rail work train will continue on to the Read and Walton crossing, arriving between 5 and 6 p.m.

3:15 p.m.

PORTLAND — The 2,000-foot train laying rails through Portland today has finished dropping off rails at the Riverside Street crossing area and is moving toward Allen Avenue, city officials said.

The Riverside crossing is now open to traffic. City officials expect the train to reach the Allen Avenue crossing between 3:30 and 4:30 p.m.

2:39 p.m.

PORTLAND — Portland motorists are being detoured away from the Riverside railroad crossing as new tracks are being laid by Pan Am and the North New England Passenger Rail Authority.

The contractors are replacing old rails with new ones which are 1,065 feet long. The workers are set to head to Allen Avenue crossing at 4 p.m., city officials said.

Motorists are encouraged to avoid the areas to avoid delays.

Rails still must be laid near the Read and Walton Crossing, Woodford’s Corner crossing and finally the Congress Street Crossing.

The work must be done during the daytime so it may continue into tomorrow, officials said.