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Highway 400 & Line 11 Underpass Bridge Replacement

Bradford, Canada

The Highway 400 & Line 11 bridge replacement project involved the design (from 30% to final) and construction of the replacement of the bridge structure and approaches.

TAGS

Bridges
Construction Engineering
Transportation

Highway 400 & Line 11 Underpass Bridge Replacement

Bradford, Canada

The Highway 400 & Line 11 bridge replacement project involved the design (from 30% to final) and construction of the replacement of the bridge structure and approaches.

The existing structure at Line 11 (Coulson Road) was a rigid frame bridge with an insufficient span to permit for the future widening of Highway 400. The project area is at the Highway 400 and Line 11 (Coulson Road) underpass, located approximately 6 kilometres south of the Highway 400 and Highway interchange within the Township of Bradford West Gwillimbury and the County of Simcoe.

The new structure design is a two-span continuous (36.5 m – 36.5 m) two-lane integral abutment bridge. The bridge’s superstructure comprises 1,600-mm-deep precast concrete NU girders and precast concrete deck panels with a cast-in-place concrete overlay. The substructure comprises cast-in-place concrete abutments founded on driven steel H piles and a cast-in-place concrete pier founded on a spread footing in the highway’s median.

The design included the provision of heritage elements to replicate features of the original bridge structure. Open metal railings were used on the parapet walls, curved fascia curtain walls were introduced at the pier, and both abutments and large precast concrete wall panels imprinted with the Ontario coat of arms were inset into each of the wingwalls to achieve the heritage considerations.

Our team also provided full construction support to Dufferin Construction Company for this project. Construction support included the design of the demolition plan for the existing structure, formwork and access platform design, and field presence when required.

location

Bradford, Canada

Budget

$4 M

Role

Structural Engineering Consultant; Construction Support

Architect

Ainley Group

Client

Ministry of Transportation Ontario

Span

36.5 m


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