Highway 407 East – Phase 1 Extension, Durham Region

Highway 407 East – Phase 1 Extension, Durham Region

Durham Region, ON

Works for 28 structures and Highway 401 realignment for the Hwy 407 East Phase 1 Extension, a 20.3 km extension of Hwy 407 from Brock Rd. at Pickering to Harmony Road, Oshawa, and construction of a new, four-lane, 10 km divided highway (Hwy 412) connecting Hwy 407 East to Hwy 401, east of Lake Ridge Road, Whitby. Works including 8 twin structures, substructure for a CP Rail bridge at Rossland Road West, and tie in structures for the new West Durham Link/Hwy 401 interchange at Whitby. Works were performed under subcontract to 407ECGP.

Key Elements:

  • Realignment of Hwy 401 over 4.75 km, from Salem Road to west of Brock Street
  • Substructure and deck for 28, 1-6 span structures, including 8 twin structures and the freeway-to-freeway interchange at Hwy 401/new Hwy 412
  • Installation of piers and abutments for a 110m, 3-span steel girder CP Rail bridge north of Rossland Road West
  • Excavation/embankment (2.1 million m3) and aggregate supply (1.2 million t) and placement, over 600,000 m2 area and 7 km of new highway 412ara
  • Installation of 4.6 m storm sewers and features, catch basins, man holes, 25 km of subdrain, stormwater management ponds, temporary retaining walls

Contract Type

Design Build Finance Maintain (DBFM)


407 East Construction General Partnership (407ECGP)


Ministry of Transportation Ontario/ Infrastructure Ontario