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Project Description & History

The I-84 Danbury Project is a Connecticut Department of Transportation (CTDOT) initiative to reduce congestion and improve the mobility of people and goods in the I-84 corridor in greater Danbury.

Past Studies


In 2000, CTDOT released the I-84 Corridor Deficiencies/Needs Study, focused on Exits 1 to 11. Recommendations in the final report relevant to Danbury were safety improvements for acceleration and deceleration lanes, local road improvements, widening and improving lane continuity at Exits 3-4 and 7-8, and increased capacity on the mainline with significant interchange and access improvements between Exits 3 and 8.

2009 – 2011

Between 2009 and 2011, CTDOT was preparing a draft Environmental Impact Statement & Environmental Evaluation for capacity improvements on I-84 between New York and Waterbury. However, no further action was taken due to lack of funding.

Aerial photo of I-84 with cars driving on it