• Length 125.09 miles; 2.64 miles in Connecticut
  • From the Pennsylvania state line at Barryville, N. Y.
  • To US 7 in New Milford

Route 55 is really New York's highway, where 98% of it is located. Go check out its Wikipedia page.

Welcome back! I do have a few things to say about it from Connecticut's point of view:

CT 55 History

Route 55 was commissioned in 1932, from the earlier State Highway 129, and has had no changes in Connecticut. The route was designated earlier in New York state, in 1930.