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Project Experience: Multimodal Corridor, Virginia

The Challenge

A multimodal corridor study was needed for a new water crossing located in the Tidewater and Peninsula regions of southeastern Virginia.

The Strategy

HMMH evaluated new locations for highways and rail lines as well as the widening of existing interstate highways, including bridges. For the MIS/DEIS, we:

  • Assessed the noise and vibration impacts and identified potential noise abatement measures for eleven alternatives. Several alternatives included an option for a light rail transit corridor
  • Measured existing noise and vibration conditions and vibration propagation testing to evaluate the vibration-carrying characteristics of the local geological condition

For the DEIS/FEIS, we:

  • Assessed the noise and vibration impacts and identified potential noise abatement measures for three candidate build alternatives
  • Used the Traffic Noise Model (TNM) for all traffic-noise computations

The noise analysis for the DEIS/FEIS marked the first time the TNM was used on an environmental study in the State of Virginia.