The Oregon Highway 217 (OR 217) Auxiliary Lanes Project will improve safety and help prevent bottlenecks on a four-mile stretch of OR 217 between Beaverton-Hillsdale Highway and OR 99W. Adding new auxiliary lanes as an on-ramp to off-ramp connections improves traffic flow. The project will also add a new frontage road, replace a major bridge structure, and add strategic bicycle and pedestrian improvements.
HMMH is providing noise consulting services for this project. For the noise analysis, the Firm is conducting a highway noise analysis consistent with the requirements of 23 CFR 772 and the ODOT Noise Manual. This includes the preparation of ODOT’s equivalent of the technical report for final barrier design. Additionally, the Firm is providing noise analysis support for the preparation of local agency noise variances.
The findings of these technical studies are being summarized in the National Environmental Policy Act Categorical Exclusion that DOWL is preparing for the project. Final barrier design analysis is being included in the project design. Construction of the project began in 2020 and HMMH is securing noise variance permits on behalf of ODOT for the project.