description Quebec Bridge Overview
The Quebec Bridge is a notable Canadian structure built in 1917. It represents a world record for cantilever-bridge span length at 549 meters across the St. Lawrence River. This road-rail bridge utilized a cantilever truss design to achieve its impressive reach.
The bridge’s construction faced significant challenges, including two collapses during its initial phases, making it of interest to civil engineers and those studying structural engineering history.
insights Why this score
Quebec Bridge ranks #1 of 80 in the Cantilever Bridge ranking, ahead of Niagara Falls Railway Cantilever Bridge.
World-record cantilever span, major engineering landmark, but construction collapses remain defining reputational weaknesses.
help Quebec Bridge FAQ
Why is the Quebec Bridge famous in structural engineering history?
The Quebec Bridge is known for its 549 meter main cantilever span, which has long been cited as a world record for cantilever bridges. It is one of the best-known large-span engineering benchmarks in North America.
When was the Quebec Bridge completed and what type of structure is it?
The bridge was built in 1917 and uses a cantilever truss design. It carries both road and rail traffic across the St. Lawrence River.
What is the geographic span of the bridge?
It links sides of the St. Lawrence River near Quebec City in Canada. The span length and mixed-use design make it a major crossing in the region.
Was the Quebec Bridge built as a standard suspension bridge or another type?
It is not a suspension bridge; the defining structure is a cantilever bridge system. That structural choice was key to reaching its long span without a continuous central support.
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