The portion between Farmington and Woodside was under contract by 1920 while the portion between Woodside and Dover was under proposal.
The portion between East Montpelier and Hardwick was assigned as an extension of VT 14.
The portion between Hardwick and Barton became a new Vermont Route 16.
The portion between Trenton and White Horse replaced part of Pre-1927 Route 2, while the portion between Lakehurst and Toms River replaced part of Pre-1927 Route 18.
The portion between Route 42 in Turnersville and the Garden State Parkway in Egg Harbor Township was completed on July 31 , 1964 and the portion between the Garden State Parkway and Atlantic City was finished in July 1965.
The portion between Springville and Ashford was a section of NY 62 and Harlem Road was unnumbered.
The portion between Ticonderoga and Westport became part of a realigned NY 30 by the following year.
The portion between NY 82A west of the hamlet of Amenia and the Connecticut state line in the town of Sharon was renumbered as NY 343.
The portion between Richfield and Salina is the busiest, with an annual average daily traffic of 11,535 vehicles in 2006.
The portion between Why and the border with Mexico began showing up on maps at this time as a gravel road.
The portion between the Long Island Expressway and the Northern State Parkway carries an average of 67,600 vehicles per day.
