The Calhoun Street Extension is a series of roads in

Trenton, New Jersey Trenton is the List of capitals in the United States, capital city of the U.S. state of New Jersey and the county seat of Mercer County, New Jersey, Mercer County. It was the federal capital, capital of the United States from November 1 until D ...

, and nearby Lawrence Township. It runs from the Calhoun Street Bridge over the

Delaware River The Delaware River is a major river in the Mid-Atlantic region of the United States and is the longest free-flowing (undammed) river in the Eastern United States. From the meeting of its branches in Hancock, New York, the river flows for a ...

to Brunswick Circle, and is composed of the following named streets: *Calhoun Street *Part of Princeton Avenue *Brunswick Circle Extension The Extension was built as a joint undertaking by the New Jersey State Highway Commission, the city of Trenton and Mercer County; it opened in January 1932. New roads built were the Brunswick Circle Extension and the northeast part of Calhoun Street; the rest of Calhoun Street and Princeton Avenue existed before the road was built. Princeton Avenue was already maintained by the county; the rest was taken over by the state. The road was intended as a bypass of Downtown Trenton for cars and light trucks; the Calhoun Street Bridge had and still has a low weight limit. It may have been part of Route 26, which continued north from Brunswick Circle. On the Pennsylvania side of the Delaware River, the road from the bridge rejoined the

Lincoln Highway The Lincoln Highway is one of the first transcontinental highways in the United States and one of the first highways designed expressly for automobiles. Conceived in 1912 by Indiana entrepreneur Carl G. Fisher, and formally dedicated Octob ...

Philadelphia Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...

at Fallsington. On the New Jersey side, the Lincoln Highway ran through Brunswick Circle, and the new Route 26 to

New Brunswick New Brunswick is a Provinces and Territories of Canada, province of Canada, bordering Quebec to the north, Nova Scotia to the east, the Gulf of Saint Lawrence to the northeast, the Bay of Fundy to the southeast, and the U.S. state of Maine to ...

, built in 1930, began at the Circle. In the 1950s, it was numbered as part of County Route 583 except along the Brunswick Circle Extension; it now has the following numbers: *County Route 653 along Calhoun Street *County Route 583 and southbound

U.S. Route 206 U.S. Route 206 (US 206) is a north–south United States Numbered Highway in the states of New Jersey, New Jersey and Pennsylvania, Pennsylvania. Only about a half a mile (800 m) of its length is in Pennsylvania; the Milford–Monta ...

(also signed as southbound U.S. Route 1 Business) along Princeton Avenue *County Route 645 (also signed as southbound US 206 and Business US 1; US 206 southbound officially stays with Princeton Avenue and Business US 1 southbound isn't officially there) along Brunswick Circle Extension. The Extension has been supplanted by

U.S. Route 1 U.S. Route 1 or U.S. Highway 1 (US 1) is a major north–south United States Numbered Highway that serves the East Coast of the United States. It runs from Key West, Florida, north to Fort Kent, Maine, at the Canadian border, ...

, which also connects Brunswick Circle to the Delaware River.

References

*{{cite news, title=New By-Pass in Trenton, work=

The New York Times ''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...

, url=https://www.nytimes.com/1932/01/31/archives/on-highways-in-traffic-renewal-time-in-connecticut-yonkers-ferry.html, date=January 31, 1932, p=XX8
1938 Mercer County map
Transportation in Mercer County, New Jersey Lawrence Township, Mercer County, New Jersey Trenton, New Jersey Roads in New Jersey