As Route 26 left the path of the Trenton and New Brunswick Turnpike to cross the railroad, State Highway Route 26A was designated in 1941 legislature to continue on the former turnpike to a former railroad crossing in North Brunswick Township. There, State Highway Route 26A continued, splitting onto a new alignment to stay northwest of the railroad, ending at Van Dyke Avenue. The existing Jersey Avenue beyond Van Dyke Avenue was taken over by Middlesex County as County Route 3R20, later renumbered County Route 693.