include the ongoing construction and improvement of various service roads, and the construction of multiple interchanges to replace the various traffic lights on the highway.

The first major upgrade from this plan, the replacement of the traffic signals at St. Mary's Road with an interchange, is expected to be complete by 2024. Following its completion, the traffic signals at PTH 3 (McGillivray Blvd) in Oak Bluff will be replaced with an interchange,