Plans to move and realign Interstate 84 will cost $5.3B

Connecticut- Interstate 84, west of the Connecticut River to the area of Sisson Avenue, is getting realigned and moved to the ground at a cost of $5.3 billion. The Connecticut Department of Transportation (CDOT) is in the planning stages to either remove the viaduct structure that carries I-84 through Hartford or bring the highway down to ground level.
CDOT has identified the ground-level option over replacing the viaduct, which has reached its 50-year life expectancy. Portions of the highway that are placed underground would have caps placed over them to allow for streets, pedestrians and development. Shifting the highway would move the rail line between Sigourney and Walnut streets. The shift will also require the relocation of the station currently located on Union Place. The project remains on schedule for a final design to start in 2021, with construction starting sometime in 2022 or 2023.