The Challenge
Assessing alternative noise-mitigation measures for neighborhoods adjacent to the Pima Freeway (SR 101) in Scottsdale, Arizona.
The Strategy
HMMH performed a literature review and assessment of different surfaces for the Pima Freeway—including their acoustical, social, environmental, cost, and safety considerations. We concluded that asphalt-rubber surfaces could perceptibly reduce traffic noise, but by themselves could not provide enough noise reduction for a significant benefit.
In addition to asphalt-rubber surfaces, we also assessed:
- Absorptive barrier surfaces
- Land-use control
- Traffic-management measures
- Vegetative barriers
- Property enhancements (sound-masking devices and home sound insulation). HMMH produced three instructional pamphlets on sound insulation, intended for homeowners.
