Traffic Noise is increased by heavier traffic volumes, higher speeds and a greater percentage of trucks. ITD environmental studies involving major highway improvements must analyze existing noise levels and predict future noise levels to determine noise impacts. All traffic noise studies prepared for ITD projects must adhere to procedures and requirements as established by federal law, Federal Highway Administration (FHWA) regulations, and ITD noise analysis guidelines.
Noise FormsNoise Barrier Abatement Checklist ITD-1055 Form
Noise Abatement Decision Checklist ITD-1056 Form
Optional Non-Barrier Noise Abatement Checklist ITD-1057 Form
Additional information concerning the Noise Policy can be found under “1300 Noise” in the ITD Environmental Process Manual
|Noise Barrier / Sound Walls along I-84|
|Noise Barrier / Sound Walls along State Highway 55|
|Noise Barrier / Sound Walls along Nampa Caldwell Boulevard|