Merchants Truss Lift from merchants limited Watch Video
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Description: Merchants Bridge – the second oldest bridge over the Mississippi River in the St. Louis region – had exceeded its design life. The main span truss members were built in 1890 and the girders and floor beams ranged in age from 116 to 132 years old. As a result, one of the nation’s primary east-west rail corridors was operating under a variety of speed, clearance, and load restrictions. Crossings were limited to one six axle locomotive on a span at a time, train speeds were limited to 20 mile
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