After travelling south on Route 159 for 0.6 miles (0.97 km), it turns eastward again on Hazard Avenue, crossing the Connecticut River from Suffield into Enfield on the Enfield-Suffield Veterans Bridge.

[3] Hazard Avenue is a limited access road from its intersection with Route 159 to just east of the interchange with I-91.

Hazard Avenue has an interchange with US 5 just after the Connecticut River crossing, where access to Route 190 is via Frew Terrace (eastbound) and Franklin Street (westbound).

East of I-91, Hazard Avenue continues as a four-lane divided surface road for another 0.6 miles (0.97 km), passing by the Brookside Plaza strip mall.

[4] On entering Somers, the road becomes known as Main Street as it goes through the Somersville section of town, where it intersects with Route 186.

[1] A portion of modern Route 190 was chartered as a private toll road (or turnpike) in October 1808.

The alignment picks up again in northern Ashford town as Hillside Road, which leads to modern Route 190 in the southwest corner of Union.

[7] East of Stafford Springs, modern Route 190 was designated as State Highway 149, which ran from Stafford Springs to the Massachusetts state line via the town center of Union (along a portion of modern Route 171).

[9] The new Route 190 incorporated old State Highway 303, with a westward extension via the village of West Suffield to the Congamond Notch in Southwick, Massachusetts.

[17] Not too long after the relocation, a freeway connection to Interstate 91 (I-91) was constructed as part of a grander plan for expressways in the Greater Hartford area.

There was some opposition to the plan, though other Suffield residents and officials saw the value of reducing traffic along Thompsonville Road.

[20] In July 1962, the plan was modified to build an expressway from Route 75 in Suffield to I-91 in Enfield.

To keep within that budget, the state planned to work east of Route 159 only, including the bridge and the I-91 interchange.