Interstate 393

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Interstate 393 marker
Interstate 393
I-393 highlighted in red
Route information
Auxiliary route of I-93
Maintained by NHDOT
Length4.594 mi[1] (7.393 km)
Existed1979[citation needed]–present
Major junctions
West end US 202 in Concord
  I-93 / US 4 in Concord
East end US 4 / US 202 / NH 9 in Pembroke
Location
CountiesMerrimack
Highway system
← US 302→ US 1
Interstate 393 bridge over the Merrimack River

Interstate 393 (I-393) is a 4.594-mile (7.393 km) east-west freeway spur extending from Interstate 93 at Concord, New Hampshire, to Pembroke, New Hampshire, United States. The primary purpose of the road is to bypass a densely built commercial strip on Route 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 4 and US 202 for its entire length.

Route description[]

Interstate 393 begins at I-93's exit 15 interchange, where US 4 East leaves its concurrency with I-93 South and the I-393/US 4/US 202 concurrency begins. The four-lane freeway actually begins a short distance west of I-93 at the north end of Concord's Main Street where US 202 turns east from US 3. From there the road then intersects Commercial Street just before the exit 15 interchange.[2] Just east of the exit 15 cloverleaf is I-393's exit 1 to Fort Eddy Road. This exit provides access to NHTI, Concord's Community College, which is home to the McAuliffe-Shepard Discovery Center, an air and space science center. I-393 crosses the Merrimack River and continues east to exit 2, connecting to New Hampshire's State Office Park East and the area known locally as the Concord Heights via East Side Drive (NH 132). Further east is exit 3, I-393's last, to New Hampshire Route 106, which runs south past the commercial area around the Steeplegate Mall, and north to New Hampshire Motor Speedway and the Laconia region. After exit 3, the road turns northward, crossing the Soucook River into Pembroke. Beyond the bridge, I-393 ends and US 4 and US 202 merge down to a single lane before joining NH 9 and continuing eastward.[2]

History[]

When I-393 was first completed circa 1979, it ended at an at-grade intersection with NH 9 and NH 106 just west of where exit 3 now stands. Exit 3 and the extension beyond were completed in the late 1980s.[3]

A feasibility study conducted in the 1980s proposed a number of alignments that would have extended I-393 beyond its eastern terminus to a new interchange (Exit 10) on the Spaulding Turnpike between Dover and Rochester.[4] This project studied the possibility of creating an east/west highway between Portsmouth and Concord. After much work, it was deemed impossible and an upgrade of U.S. Route 4, a road which closely follows the route of the first NH turnpike from the early 1800s, was studied and completed.[5]

The intersection of Commercial Street and US 202 used to be a four-way crossing, but in recent years Jersey barriers have been installed and a short bypass under US 202 has been constructed to prevent traffic from crossing the freeway, although the traffic lights remain. The lights on the westbound side have since been modified to become warning lights for the traffic signal at the intersection with US 3.

Exit list[]

The entire route is in Merrimack County. [1][6]

Location[1][6]mi[1][6]kmExitDestinationsNotes
Concord0.0000.000–
 US 202 west to US 3 (North Main Street) – Downtown

 I-93 south to I-89 – Manchester, Lebanon
I-93 north / US 4 west – Plymouth		Western end of concurrency with US 4 / US 202; Exit 15 on I-93
0.2570.4141Fort Eddy Road – NHTI Community College
0.5520.888Veterans Memorial Bridge over the Merrimack River
1.3172.1202 NH 132 (East Side Drive)
3.1445.0603 NH 106 – Laconia, Pembroke
Pembroke4.5947.393– US 4 east / US 202 east / NH 9 eastEastern end of concurrency with US 4 / US 202
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[]

Route map:

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KML is from Wikidata
  1. ^ Jump up to: a b c Bureau of Planning & Community Assistance (February 20, 2015). "NH Public Roads". Concord, New Hampshire: New Hampshire Department of Transportation. Retrieved April 7, 2015.
  2. ^ Jump up to: a b Google (June 8, 2009). "Interstate 393" (Map). Google Maps. Google. Retrieved June 8, 2009.
  3. ^ kurumi.com. "3-digit Interstates from I-93". Retrieved 2006-09-20.
  4. ^ http://www.gpo.gov/fdsys/pkg/CZIC-te175-n48-1989/pdf/CZIC-te175-n48-1989.pdf
  5. ^ "Preservation Company :: Cross Region Connections". Retrieved 17 February 2013.
  6. ^ Jump up to: a b Bureau of Planning & Community Assistance (April 3, 2015). "Nodal Reference 2015, State of New Hampshire". New Hampshire Department of Transportation. Retrieved April 7, 2015.[permanent dead link]
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