PORTLAND — The Maine Narrow Gauge Railroad has been awarded a $3,000 grant which will go toward restoration of a nearly century-old engine.

The grant is from the Amherst Railway Society, an organization of rail enthusiasts in Massachusetts.

The money will help with the restoration of the railroad’s steam locomotive Engine No. 7, which was built in 1913 and operated on the Bridgton and Saco River Railroad until that service ceased in 1941. The engine also operated at the Maine Narrow Gauge Railroad Co. & Museum until it had to be put out of service in 2004 due to federal railway regulations.

The restoration began three years ago and is expected to be completed in 2013.

The Maine Narrow Gauge runs on a track along Portland’s East End daily until the end of October.