Two lanes of the Plessis Underpass will open this Saturday.

Drivers will be able to take the new underpass between Dugald Road and Kernaghan Avenue beginning Oct. 31.

The underpass of the CN rail line also includes drainage improvements, active transportation, roadway improvements, relocation of utilities and relocation of oil pipelines.

The project is aimed at reducing congestion regularly caused by passing trains.

The original completion date was in 2014, but that was later revised to having some lanes operational by September 2016.

That means the project is now ahead of schedule for a 2017 completion date.