Interstate 393

Interstate 393 marker
Interstate 393
Map
I-393 highlighted in red
Route information
Auxiliary route of I-93
Maintained by NHDOT
Length4.6 mi[1] (7.4 km)
Existed1979[citation needed]–present
NHSEntire route
Major junctions
West end I-93 / US 4 / US 202 in Concord
East end US 4 / US 202 / NH 9 in Pembroke
Location
CountryUnited States
StateNew Hampshire
CountiesMerrimack
Highway system
US 302 US 1
I-393 bridge over the Merrimack River

Interstate 393 (I-393) is a 4.6-mile (7.4 km) east–west auxiliary Interstate Highway extending from I-93 at Concord to Pembroke, New Hampshire. The primary purpose of the road is to bypass a densely built commercial strip on New Hampshire Route 9 (NH 9) in the eastern part of Concord. Several times a year, I-393 also serves traffic to events at New Hampshire Motor Speedway in Loudon. I-393 runs concurrently with US Route 4 (US 4) and US 202 for its entire length.

  1. ^ Starks, Edward (January 27, 2022). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved December 13, 2022.