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The bascule bridge crossing the Lake Washington Ship Canal on Salmon Bay near Ballard was built in 1914.
“As it goes up and down with a counterweight, what we found was that the trunnion bearing [on which the bridge rotates] was getting fatigued,” said BNSF spokesperson Courtney Wallace. BNSF replaced the trunnion bearings about a decade ago.
About 30-40 passenger and freight trains cross the bridge each day, clearing marine traffic through the Ballard Locks.
For tall ships, the railroad is proposing a vertical lift bridge with 155 feet of clearance.
The company expects the project’s permitting phase to take two years before a new span is constructed parallel to the current bridge, expected to last three years. BNSF will then remove the old bridge.
The post BNSF to build $200M Seattle drawbridge appeared first on Railway Age.
This article first appeared on www.railwayage.com
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