Wilson Ihrig

We are a leader and a recognized international authority in rail transit noise and vibration. Our first transit project for BART in 1966 marked the beginning of successful, often pioneering, work on over 400 transit and rail projects in the United States and abroad. We have served as the systemwide acoustical consultant from the initial environmental impact phase through the engineering design phases for several U.S. rail systems. Our work for the Transportation Research Board, USDOT, and FTA has significantly advanced transit noise and vibration control around the world. Our continued success on projects is the result of innovative and cost-effective solutions and the unparalleled knowledge and experience of our professional staff.

Our projects include:

• Environmental impact studies
• Noise and vibration measurement
• Alternatives analyses
• Track vibration isolation
• Transit vehicle interior noise
• Transit vehicle ride quality
• Station acoustics
• FRA Quiet Zone studies
• Aerial structures and tunnels
• Grade separations
• Yards and maintenance facilities
• Construction noise and vibration monitoring

Noise and vibration studies for:

• Heavy rail
• Light rail
• Commuter rail
• High speed rail
• Bus rapid transit
• Railroads
• Intermodal facilities
• Automated people movers

Solutions

• Services