Roadway Improvements
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BBA’s most recent experience in roadway improvement project noise studies includes:

Bowman Road Paving Project,
Ridgecrest ( Kern County)

Green Valley Road : Weber Creek Bridge,
El Dorado County

Green Valley Road : Tennessee Creek Bridge,
El Dorado County

Gibson Canyon Road HR3 Improvement Project,
Solano County

Flores Avenue Access Road Improvement, Tehama County

Ben Maddox Way Bridge Improvements,
City of Visalia

Reconstruction of Herndon Avenue and Golden State Avenue between Highway 99 and Weber Avenue,
Fresno County

Herndon Avenue Widening from Willow Avenue to Minnewawa Avenue,
City of Clovis
BBA offers traffic noise assessment services for roadway improvement projects, especially those requiring Caltrans approvals. To meet current Caltrans requirements, BBA uses the U.S. DOT Traffic Noise Model (TNM) Version 2.5 to describe traffic noise exposures. This program allows digitizing of roadway geometry, barriers, and receiver locations for analysis of complex situations. The TNM is routinely calibrated using on-site noise level measurements to ensure that the results reflect actual field conditions. Additional ambient noise measurements are conducted to describe peak hour traffic noise levels. Traffic noise impacts are evaluated in accordance with the Caltrans Traffic Noise Protocol, following the Caltrans templates.