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WATCH: Building a rail underpass in 51 hours

by ASC Staff on Oct 7, 2012

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By: John Bambridge

The first of four rail bridges being built to enable pedestrians to cross under a busy rail corridor in California has been built in 51 hours flat in an effort to minimise the disruption to train traffic.

The $5.9m bridge is a component of a broader $25.7m project to ease passage around the busy San Diego to Los Angeles rail corridor, which carries more than 50 passenger and freight trains a day.

The San Diego Association of Governments is project manager, with TY Lin as design engineer, Flatiron as general contractor and Caltrop responsible for construction management.

This time-lapse video shows the site as crews install the bridge - from excavation to the laying the tracks:


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