Mt. Veeder Storm Damage Repair, RDS 19-13


  • Status: Complete
  • Contact: Dewey Phan
  • Publish Date: February 25, 2021

Project Scope

Damage was caused to Mt. Veeder Road MPM 5.1 from a storm event that occurred in Napa County in February 2017. Intense rainfall saturated the embankment causing an approximately 30-foot downslope slide and damage to approximately 320-foot-long segment of the roadway.  

The project proposes to reconstruct the road with a cast-in-drilled-hole (CIDH) concrete retaining wall that is 400’ long. The wall height varies from 4 feet to 10 feet and the pier depth for the 45 concrete-drilled piles (24 inches in diameter) is 20 feet. Best Management Practices (BMP) including erosion/sediment control is also part of the design.

Project Map

View a map of the project on the County’s Geographical Information System Map.


Contractor shall possess a Class A license at the time of contract award. The Engineer's estimate is $1,250,000. 

Bid Documents

The plans and specifications are available in the link below to view or download. The mandatory Bidder's List is available now 03-10-21. Addendum 1 was added 03-11-21. The bid opening was March 18, 2021 at 11:30. The subcontractors lists have been posted. The bid tabulation has been posted. The project was awarded by the Board of Supervisors on April 20, 2021 to Piazza Construction of Penngrove,CA.

Total Base Bid
Piazza Construction - Penngrove, CA
Maggiora & Ghilotti - San Rafael, CA
Granite Construction Co. - Ukiah, CA
Gordon N. Ball, Inc. - Alamo, CA
Pat Nelson Construction - Petaluma, CA
Bridgeway Civil Constructors - Vacaville, CA
Suulutaaq, Inc. - Suisun City, CA
Azul Works, Inc. - San Francisco, CA
Ghilotti Construction Co. - Santa Rosa, CA
Thompson Builders - Novato, CA
Marshall Brothers Enterprises - Livermore , CA