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Air Rail Highway Bike/Ped Public Transit
The purpose of the Air & Noise Program is to assess and guide the Department relative to issues of air quality and noise impacts as well as to recommend potential avoidance, minimization and abatement measures in order to allow for the progression of Department actions while ensuring compliance with all rules and regulations relative to air quality and noise.

Noise Analysis


Abatement Eligibility
Noise abatement in New Hampshire is generally in the form of a sound barrier or berm. The locations of these barriers are identified using a specific set of criteria set forth by the NH Department of Transportation (NH DOT) and the Federal Highway Administration (FHWA). An area is not considered eligible for noise abatement unless it meets ALL of the criteria set forth in the Department's Noise Policy.

Additional Information:

Type II Noise Barrier Program

Air Quality

Additional Information:


New Hampshire Department of Transportation
PO Box 483 | 7 Hazen Drive | Concord, NH | 03302-0483
Tel: 603.271-3734 | Fax: 603.271.3914

copyright 2015. State of New Hampshire