Company Careers
Start A Project

El Molino Winery

Napa Valley, California

Storage Structure


El Molino Winery


El Molino Winery


November 21, 1991

El Molino was one of the first wineries built in the Napa Valley. The original winery was founded in 1871 and operated until Prohibition in 1920. This unique family-owned and operated facility, including the original tunnel, has been completely restored by Reg and Marie Oliver, owners since 1976.

Tucked into a hillside at El Molino is a 72 foot CON/SPAN ® tunnel connector built during an expansion and restoration project. CON/SPAN ® adapted its precast modular arched units to serve as an underground vault, offering ideal natural conditions for wine creation. Reg Oliver explains the two problems the structure solved: “First, the slope of the hill on the tunnel site was gradual and didn’t allow for much clearance above the structure. Secondly, we needed carrying capacity for a work area and road above. CON/SPAN ® fit our needs – providing the strength we needed for above as well as within the tunnel itself”


Technical Description:

  • Span: 12 ft
  • Rise: 9 ft
  • Length: 48 ft

800-338-1122 |

© 2018 Contech Engineered Solutions LLC