Route 9 was truncated to end at I-91 in Cromwell instead.

M-50 was truncated to end near Lowell at I-96.

Route 20 was truncated to end at Exit 40 of I-91, where it ends today.

This resulted in Route 20 being truncated to end at I-91.

NY 56 was truncated to end in Potsdam as part of the change.

At the same time, Route 15 was truncated to end at I-84.

The route was truncated on the southern end to end at Janesville in the late 1940s.

NY 25 was truncated to end in Queens as a result.

The northern end was truncated to end to the east of Bad Axe.

In 1962, Route 173 was truncated to end at Route 71.