State Route 85 Noise Reduction Program (Phase 2)

To address existing noise concerns on State Route (SR) 85, VTA is working with cities along SR 85 and Caltrans to study, test and implement noise reduction treatments through a three-phase process:

  • Phase 1 (Completed): This phase used available noise studies for evaluation of alternative noise reduction measures that could be implemented with Caltrans approval, identification of test locations, selection of five (5) representative test locations, and analysis of feasible noise reduction at each test location. View Phase 1 Final Report here.
  • Phase 2: This phase involves the pilot testing of the recommended noise reduction measures identified in Phase 1 at the five (5) test locations and evaluation of their efficacy after implementation.
  • Phase 3: This phase involves the implementation of those measures from Phase 2 that show promise in reducing noise at other impacted sensitive receptors along SR 85.
  • ...

To address existing noise concerns on State Route (SR) 85, VTA is working with cities along SR 85 and Caltrans to study, test and implement noise reduction treatments through a three-phase process:

  • Phase 1 (Completed): This phase used available noise studies for evaluation of alternative noise reduction measures that could be implemented with Caltrans approval, identification of test locations, selection of five (5) representative test locations, and analysis of feasible noise reduction at each test location. View Phase 1 Final Report here.
  • Phase 2: This phase involves the pilot testing of the recommended noise reduction measures identified in Phase 1 at the five (5) test locations and evaluation of their efficacy after implementation.
  • Phase 3: This phase involves the implementation of those measures from Phase 2 that show promise in reducing noise at other impacted sensitive receptors along SR 85.

Objectives

The SR 85 Noise Reduction Project Phase 2 will construct noise reduction measures that include pavement overlays or other pavement surface treatments at select locations along SR 85.  The Project will modify existing sound walls at a subset of two or three of these locations for additional noise attenuation. The purpose of the project is to test the effectiveness of noise reduction measures at the five locations identified in the SR 85 Noise Reduction Study (Phase 1) completed in September 2016. The results of these tests will be used to evaluate the costs and benefits for possible corridor wide measures (Phase 3) at some point in the future. 

Pilot Testing Locations

The specific recommended noise reduction measures at each location may change based on additional input from Caltrans and other stakeholders. The Project will also re-examine the feasibility to implement a noise attenuating cap to the top of the existing sound walls. The five test locations along SR 85 are listed below:

Location #1  SR 85 near Lubich Drive in Mountain View. 1,600 feet of pavement surfacing (both northbound and southbound) to reduce noise generation for vehicle tire/pavement interface.
Location #2 SR 85 near S. Bernardo Avenue/The Dalles intersection in Sunnyvale.  2,800 feet of pavement surfacing to reduce noise generation for vehicle tire/pavement interface.
Location #3 SR 85 between McClellan Road Overcrossing and S. Stelling Road Overcrossing in Cupertino. 2,600 feet pavement surfacing to reduce noise generation for vehicle tire/pavement interface.
Location #4 SR 85 near the Cox Avenue Overcrossing in Saratoga. 3,500 feet of pavement surfacing to reduce noise generation for vehicle tire/pavement interface.
Location #5 SR 85 west of the Callahan Avenue Undercrossing in San Jose.  1,200 feet of pavement surfacing to reduce noise generation for vehicle tire/pavement interface.

Timeline

Title
Preliminary Engineering
Phase Date Range
-
Title
Environmental Clearance
Phase Date Range
-
Title
Design and Engineering
Phase Date Range
-
Title
Construction
Phase Date Range
-

Funding

Total Funding
$10 million
Amount
$10 million