Highway 401 Realignment, Oshawa

Highway 401 Realignment, Oshawa

Oshawa, ON

Realignment of Highway 401 over 2km, construction of a new interchange at Stevenson Road, 5 new structures and on/off ramps at Stevenson Road, new CP Rail underpass structure, demolition of the existing Stevenson Road structure, resurfacing and roadside safety improvements over 20 km from Cubert Street to Highway 35/115 in Clarington.

Key Elements:

  • Grading, drainage, granular base
  • 3 post tensioned structures
  • 2 (other type) strucures
  • CP rail structure, 4 steel girders (148 - 252 tonne)
  • Overnight demolition and removal of Stevenson Road overpass of Hwy 401 structure
  • Roadside safety improvements at Bloor Street, Champlain Avenue and Stevenson Road
  • 2.5 km watermain installation
  • Roadway and high mast lighting, traffic signals, landscaping

Contract Type

Design Bid Build (DBB)


Ministry of Transportation Ontario

Contract Administrator

Highway Construction Inspection Ontario (HCI)


Ministry of Transportation Ontario