Starting from 2002, the westbound collector lanes on the outer north bridge have also undergone rehabilitation (replacing road surface, guard rails and/or concrete barriers).

At the foot of the bridges is the Earl Bales Park and Ski Centre in the north and Don Valley Golf Course to the south, both owned by the City of Toronto.

An access road branches off from the westbound on-ramp and travels downward to the valley below and ends in a cul-de-sac just south of the eastbound collector lanes.

Given the importance of this segment of Highway 401 through the GTA, the Ministry of Transportation was particularly concerned with the development of construction staging plans and the mitigation of traffic during the rehabilitation of the Hoggs Hollow Bridge.

[3] In 2008, Morrison Hershfield was retained by the Ministry of Transportation of Ontario (MTO) as the lead consultant for a Total Project Management (TPM) Detailed Design assignment for the rehabilitation of Highway 401 at Hoggs Hollow Bridge.

The safety needs of the traveling public and workers within the construction zone were met, with minimal disruption to commuters and commercial carriers.

Work on the Hoggs Hollow Bridge saw most of the lane closures required done at night to minimize congestion on Canada’s busiest section of highway.

[3] The rehabilitation of Hoggs Hollow Bridge was completed in 2012[4] with transfer from collectors to express restored full access to all lanes in both directions.