Calpella Two Bridge Replacements

This project will replace the existing two bridges on State Route 20 (SR20) that span the Russian River and Eastside Road in Redwood Valley, Mendocino County (post miles 33.4 to 34.2).

The existing bridges will remain intact during construction to accommodate traffic. It was decided to construct one single bridge on an alignment slightly to the south allowing construction to take place with minimal impacts to the public.

Purpose and Need

The current Russian River Bridge was built in 1955 and is reaching the end of its service life. The Eastside Capella Overcrossing will also be replaced. The new bridge alignment will improve safety for motorists and bicyclists and will allow for better acceleration and deceleration lanes at the intersection of Route 20 and Road 144.

Project Timeline

  • Begin Construction - June 2022
  • End Construction - November 2025

Budget

  • Construction Capital: $28,701K
  • Right of Way Capital: $1,121K

Documents

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Simulations of Proposed Designs

Contact Information

Project Manager

Robert King (707) 296-5573

Public Information Officer (Media Inquires)

Manny Machado (707) 496-6879, TTY 711

Current construction at Calpella Bridges on State Route 20. The project spans the Russian River and Eastside Road in Redwood Valley, Mendocino County (post miles 33.4 to 34.2).

Current construction at Calpella Bridges on State Route 20. The project spans the Russian River and Eastside Road in Redwood Valley, Mendocino County (post miles 33.4 to 34.2).

Construction is underway on the Calpella Two Bridge Replacement Project. 

Social Media Updates

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Click on the images below to view original posts. (External Site)

Screenshot of Facebook post about the Calpella Two Bridge Replacement Project.

Screenshot of Facebook post about the Calpella Two Bridges Replacement Project