Wire Road Bridge Replacement

Town of Merrimack, NH

New Hampshire Department of Transportation (NHDOT) Constructs First NEXT Beam Bridge
The very first NEXT Beam bridge constructed with joint funding by the New Hampshire Department of Transportation (NHDOT), Bureau of Planning and Community Assistance, Municipal Bridge Aid and municipal funding was constructed on Wire Road over Baboosic Brook in Merrimack, New Hampshire.

The existing Wire Road roadway crossing of Baboosic Brook was a 16-foot diameter, 65-foot long corrugated metal arch pipe approximately 25 years old with moderate detoriation of the invert. The roadway was constructed such that the crown of the CMP arch was above the low point of the road yielding frequent inundation and overtopping of the roadway during storm events. This bridge crossing serves a major north south commuter roadway within the Town.

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Projects details

  • PrecasterJ.P. Carrara & Sons, Inc., Middlebury, VT

  • OwnerTown of Merrimack, NH

  • EngineerQuantum Construction Consultants, LLC, Concord, NH

  • ContractorR.M. Piper, Inc., Plymouth, NH


  • Structural Precast Elements: Precast Concrete NEXT Beams

  • Overall finished width: 30’-3½”, 26’-3½”inside curbs

  • Three (3) NEXT 32D Beams: 9’-6½”(W) x 66’-0” (L)

  • Concrete integral pile supported abutments: 3’-0” Pile caps

  • Wire Road Bridge PDF (261.5 KB)

  • Bridge Resources