Connecticut DOT’s Weekend Closure to Replace I-84 Bridges over Marion Avenue

October 29, 2015 1:00 pm

by Timothy D. Fields P.E., Transportation Principal Engineer, Connecticut DOT; Mary E. Baker P.E., Transportation Supervising Engineer, Connecticut DOT; Mohammed Bishtawi P.E., Transportation Supervising Engineer, Connecticut DOT.

Webinar Documents

Description: Over a weekend in June 2014, the Connecticut Department of Transportation replaced its two substandard bridges on Interstate-84 over Marion Avenue in Southington. The two new 102-ft-long spans each weighed two million pounds. They were built near the site and transported on self-propelled modular transporters into position with such speed that the first bridge was re-opened at 4:30 pm on Sunday, 12 hours ahead of schedule. The second bridge was re-opened a few hours later. This presentation describes the planning, design, and construction details for this successful ABC project.

Lowering new WB girder onto temporary supports in staging area
Lowering new WB girder onto temporary supports in staging area

Moving old EB span out on SPMTs
Moving old EB span out on SPMTs

Moving new EB span in on SPMTs
Moving new EB span in on SPMTs