After construction along the Barrie GO rail line shut down train service for one weekend last month, GO Transit is announcing further interruptions in service Dec. 5 to 18.

Construction crews are completing infrastructure upgrades along the track, taking advantage of weekends and late evenings to minimize disruption to customers.

On Dec. 5 and 6, riders leaving at the Allandale Waterfront and Barrie South GO stops in the morning will have to take a bus to the Bradford station, where a train will take you the rest of the trip.

Riders leaving Barrie in the afternoon will take a bus to stops along the way to the Aurora GO station, where train service resumes.

All riders heading northbound to Barrie will have to take a bus from the Aurora GO station.

From Dec. 8 to 18, the 10:53 p.m. train from Union Station to the Allandale Waterfront GO station will be cancelled. Riders can get on a bus to connect with stops at the Rutherford, Maple, King City and Aurora stations.

More detailed information about the service change schedule can be found at .