I-84 has only three exits in Massachusetts, before ending at I-90, the Massachusetts Turnpike. I-84 ends at exit 78 (formerly exit 9) of I-90, which is located in Sturbridge, into the state, making the Massachusetts section of the highway the shortest distance within any of the four states it traverses. History I-84 was originally to head east from Hartford, Connecticut, to Providence, Rhode Island. The original route of I-84 would have used present-day I-384 to Bolton, Connecticut, then along a never-built section of freeway that would have connected to the US 6 bypass around Willimantic, Connecticut. Another never-built freeway section would have connected it to I-395 and extended I-84 onto State Road 695 (SR 695) in Connecticut, the easternmost portion of the Connecticut Turnpike in Plainfield, Connecticut. From there, it would have roughly followed US 6 through western Rhode Island to connect to the present-day US 6 freeway in Johnston. From there, a freeway from Olneyville Square to the I-95/I-195 interchange was briefly considered but abandoned in favor of what later became the Route 6-10 Connector. Sections of I-84 in Connecticut were reconstructed and widened in the 1980s. The former I-86 portion from East Hartford to the Massachusetts state line was completely rebuilt from a narrow four-lane freeway to a much wider profile ranging from six lanes at the Massachusetts state line, expanding to eight lanes in Vernon, to 12 lanes with high-occupancy vehicle lanes (HOV lanes) in East Hartford. Another section through Danbury was widened from four lanes to six lanes in 1985 and 1986. Widening of the highway through Danbury was funded by Union Carbide as part of building its world headquarters in Danbury. Though the route was confirmed in Connecticut, many issues remained in Rhode Island, the biggest of which were major environmental concerns about how the freeway would affect the Scituate Reservoir, which is the main drinking water supply for Providence. In an attempt to ease environmental concerns, an alternate route was briefly studied in Rhode Island that would have connected I-84 to the present-day Route 37 freeway. This would have allowed construction of I-84 south of the Scituate Reservoir. Major community opposition caused this plan, as well as all plans for a Hartford–Providence expressway, to be scrapped in the 1980s. In the 1992, long-range transportation plan released by the Rhode Island Department of Transportation, a freeway was added along the original route of I-84 that