U.S. 1 Bypass - Portsmouth / Kittery

U.S. 1 Bypass

U.S. 1 Bypass branches west from U.S. 1 in the town of Kittery to the Sarah Mildred Long Bridge crossing the Piscataqua River into Portsmouth, New Hampshire. The route is mostly a four lane arterial with a grade separation at Route 103 (Dennett Road). U.S. 1 Bypass narrows to two lanes across the span into the Granite State and widens again to a four lane expressway southwest to a traffic circle connecting U.S. 4, the Spaulding Turnpike and Interstate 95. South from U.S. 4, U.S. 1 Bypass continues past two signalized intersections along an expressway back to U.S. 1 (Lafayette Road).

Major construction underway between 2015 and late 2017 focused on replacing the Sarah Mildred Long Bridge, which was built in 1940, across the Piscataqua River. The $170 million project was funded jointly by the Maine and New Hampshire Departments of Transportation.2 Preliminary work consolidated the connectors from U.S. 1 Bypass to State Route 103 at Oak Terrace. Traffic lights were activated on January 22, 2015 at a new intersection with Bridge Street.2 The new traffic pattern provided connections from U.S. 1 Bypass south to Bridge Street and from Bridge Street to the Piscataqua River bridge, eliminating the previous movement along the Oak Terrace loop.

The Sarah Mildred Long Bridge closed to traffic permanently on August 21, 2016, following the failure of a mechanism used in lifting the center span to accommodate boating traffic. The bridge was slated for removal on November 1, 2016. The time needed and costs associated with repairing the lift mechanism, coupled with the pending removal of the span, led officials to raise the bridge and ultimately remove the center span.3

References:

  1. "N.H. DOT project aims to revamp Route 1 Bypass." Seacoastonline.com, September 3, 2012.
  2. New Hampshire DOT Portsmouth - STP-X-5379(025) 13455 US Route 1 Bypass PDF file, https://www.nh.gov/dot/projects/portsmouth13455/documents/13455_contractmap_111314.pdf accessed January 29, 2015.
  3. "Sarah Long Bridge Permanently Closed to Vehicular Traffic." https://www.nh.gov/dot/media/nr2016/nr-2016-08-24-long-bridge-closure.htm" New Hampshire DOT, news release. August 24, 2016.

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Page Updated Tuesday November 22, 2016.