Interstate 93 Expansion
Salem, NH to Manchester, NH

The New Hampshire Department of Transportation (NHDOT) is undertaking a comprehensive reconstruction of 19.8 miles of I-93 between Salem and Manchester. Proposed construction includes rebuilding and widening from two-lanes to four-lanes in each direction; reconstructing five interchanges; replacing or rehabilitating 43 bridges (20 new); constructing five miles of sound walls; constructing 4500 linear feet of retaining walls; constructing extensive drainage facilities for water quality treatment; providing alternative modes of transportation; and designing a Park and Ride lot. With a goal of improving efficient and safer driving conditions, a modernized road system, and flexible commuting options, the NHDOT hopes to accelerate construction to seven years to minimize disruption to drivers, businesses, and communities.

Nobis Engineering, Inc. (Nobis), a Disadvantaged Business Enterprise, is providing civil design and utility coordination, in support of the Project Team. Nobis is providing utility coordination with utility owners from the verification of existing facilities phase through the final relocation designs by utility owners. Additionally, Nobis is performing subsurface utility engineering (SUE) for select areas of the project and utility coordination in connection with the proposed water line directional boring in the Cross Street area. Nobis is supporting the design team by providing comprehensive preliminary and final sound wall design for residential properties in the vicinity of the new highway. Nobis is also designing and preparing the contract plans for construction of the Exit 3 Park and Ride facility.