Blue Water Bridge - Approach and Rehabilitation
Blue Water Bridge Authority
3,360,000 sq. ft.
Bridges / Structures
The two-kilometer long Blue Water Bridge is a major Canada-U.S. border crossing connecting Port Huron, Michigan and Sarnia, Ontario. The level of traffic over the bridge necessitated construction of a second bridge to effectively double capacity. EllisDon’s first contract was for the construction of the approach span on the Ontario side of the border and took place simultaneously with the construction of the Main Span and the Michigan Approach Span.
EllisDon’s contract involved the construction of a 15 span, 550-meter, elevated approach consisting of four steel box girder spans and ten three-box girder spans together with a 160-meter approach ramp and associated works. The elevated section is supported by 13 concrete “hammer head” piers, built on 432 straight and angled piles. This project involved a jacking plan to offset anticipated movement in the existing bridge caused by the placing of pre-consolidated fill for the construction of the new ramp. Hydraulic jacks supported the bridge during the period of movement. EllisDon also set-up an on-site pre-casting operation to produce the 30 concrete box girders required for the project.