• Cotati, CA
    Phone: 707.794.0400

    Denver, CO
    Phone: 707.794.0400
  • Transportation

    Illingworth & Rodkin has conducted numerous noise, air quality, and greenhouse gas emission studies for highway transportation projects, ranging from small intersection or ramp improvement projects to the construction of new highways to highway expansion projects stretching as far as 36 miles in length. For noise studies, we conduct field investigations, develop traffic noise models using the Federal Highway Administration approved traffic noise model (TNM), assess impact abatement/mitigation, and prepare noise study reports in accordance with the State DOT and local traffic noise analysis protocols. Additionally, we are able to aid with the selection of pavement for purposes of noise reduction. For air quality and greenhouse gas studies, we establish existing air quality conditions, identify regional air quality impacts, analyze CO Hot Spots, assess project GHG emissions and mobile source air toxics, and address construction air quality impacts.
    Available Services

    • Baseline noise and vibration measurements
    • Environmental noise, air quality, and GHG assessments
    • Noise, Air Quality, and GHG Reports (NSR) analysis and documentation
    • Traffic noise and air quality modeling of existing and design alternatives
    • Calculation of future noise levels based on traffic volume predictions
    • Traffic noise contour mapping with 3-Dimensional capabilities
    • Pavement selection for purpose of noise reduction
    • Noise barrier and sound insulation design
    • Traffic noise monitoring using wayside (CTIM, CPB, SPB) and onboard sound intensity (OBSI) measurement methods


    Who We Areimg
  • An engineering consulting firm with experience since 1987 in acoustics and air quality learn more

  • Capabilitiesimg
  • Expert consultants dedicated to providing clients with quality service in acoustics and air quality management learn more

  • Past Performanceimg
  • Since 1987 Illingworth & Rodkin consultants have conducted over 4,500 proprietary studies in... learn more
  • In the Newsimg

    Illingworth & Rodkin's Dana Lodico interviewed on highway noise barriers...learn more

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