Connecticut DOT: Replacing Bridges as Easy as A-B-C

The Connecticut Department of Transportation recently replaced two bridges on I-84 in Southington in just one weekend using the process known as Accelerated Bridge Construction, minimizing traffic impacts and avoiding the need to close lanes or the entire highway for weeks or months at a  time.

With Accelerated Bridge Construction, new bridges are built adjacent to the old ones and then lifted into place when they’re ready with Self-Propelled Modular Transport units. This was a $6 million project

The old bridge decks were composed of concrete on pre-stressed concrete girders overlaid with bituminous concrete and were built in 1963. The new structures are of a similar design, although the vertical clearance over Marion Avenue was increased.  Time-lapse videos are attached for your viewing.

I-84 Southington Bridge Replacement ConnDOT Time Lapse

I-84 Southington Bridge Replacement Earthcam Time Lapse