United States Highway 4 is a United States highway that runs from Portsmouth, New Hampshire to East Greenbush (town), New York. In New Hampshire and Vermont it runs generally east-west; in New York, north-south.

History of Ends

Approx. time period

 East Terminus West Terminus 

1926-1930

 Portsmouth, New Hampshire Glens Falls, New York 

1930-present

 Portsmouth, New Hampshire East Greenbush, New York 

Point where signage changes from "East/West" to "North/South":

 Vermont/New York state line 

States

• New Hampshire
• Vermont
• New York

East end

• Portsmouth, New Hampshire

West end

• East Greenbush, New York (near Albany, New York)

Child routes

• U.S. Highway 104 (decommissioned)

See also

• List of United States Highways