Though an interchange does exist between NY 45 and the Palisades Interstate Parkway, the route has no access to the New York State Thruway.

[3] NY 45 runs parallel to the small portion of the Garden State Parkway (GSP) that enters New York.

Again the road becomes relatively quiet, but it begins to parallel the Palisades Interstate Parkway, until its intersection at exit 12 in Pomona.

This area of US 202 is in downtown Mount Ivy, and exit 13 of the Palisades is just 0.1 miles (0.2 km) west of NY 45's northern terminus.

[2] In 1958, Ramapo town engineer Edwin Wallace noticed an increase in the amount of traffic passing through the village of Spring Valley.

Rockland County approved the proposed bypass two years later, and the plans were forwarded to the New York State Department of Transportation.