Interstate 393 New Hampshire
Interstate 393 is a spur freeway taking traffic from Interstate 93 and the state capital of Concord to points east along U.S. 4 and 202. These two routes continue to Portsmouth and Rochester, respectively. The freeway bypasses Concord Municipal Airport (CON) and the commercialized corridor of NH 9 (former U.S. 4 & 202) to the north.
The designation of Interstate 393 was approved by AASHTO on July 13, 1976. The freeway initially ran east from the preexisting cloverleaf interchange between I-93 and the U.S. 3-4-202 connector to New Hampshire 9 (Loudon Road) in August 1981.1 The route was proposed to extend east from Concord to the Spaulding Turnpike in 1983, but that extension was dropped in favor of upgrading New Hampshire 101 to a full freeway between I-93 and I-95.2 That left construction of the eastern leg of I-393 beyond NH 106, which opened in December 1988.3
East End – Pembroke, NH
West End – Concord, NH
Mileage – 4.60
Cities – Concord
- Junctions –
Source: December 31, 2018 Interstate Route Log and Finders List
I-393 Annual Average Daily Traffic (AADT)
Source: 2008 to 2015 AADT NHDOT Traffic Volume Reports
East End – Pembroke, New Hampshire
West End – Concord, New Hampshire
- “Briefs about New Hampshire.” The Telegraph, January 4, 1982.
- “East-west highway study is proposed.” The Telegraph, February 22, 1983.
- “100th Anniversary Series Part III – The Interstate Highway System.” New Hampshire Highways, May / June 2004 edition.
Page updated May 27, 2015.