Despite some rainy weather, construction crews were able to replace the bridge carrying northbound traffic on Interstate 95 over Saugatuck Avenue some 14 hours ahead of schedule over the weekend. Josh Morgan, a spokesperson for the state Department of Transportation, said crews were able to start moving the pre-built bridge section into place more than two hours ahead of time on Saturday morning. Crews rely on heavy machinery for the demolition work, Morgan said, rather than demolition charges. The teardown “creates basically a big pile of rubble on the ground,” Morgan said. The system of rollers and hydraulic jacks will then slide the pre-built span into place on the highway. Workers are able to start sliding the new span home even as crews clean up the debris left by the old bridge, Morgan said. The technique is known as accelerated bridge construction, or ABC, which is aimed at reducing traffic impacts, delays due to weather and construction time during bridge replacements. Doing it this way does not add an additional cost, Morgan said.
https://www.stamfordadvocate.com/news/article/i-95-bridge-project-norwalk-westport-saugatuck-18442593.php?src=sthppromostrip