Historic Watmaugh Bridge

What’s Happening?

The Watmaugh Road Bridge over Sonoma Creek is a historic steel truss bridge that has served the community for nearly a century. While it remains a notable local landmark, the County is evaluating its history, current condition, and future options as part of broader roadway and infrastructure planning.

How We Got Here

• In the 1890s, local residents petitioned for a bridge at this site to replace a ford (shallow stream crossing).
• The first bridge, a wooden structure, was built with County funding.
• In 1891, the King Iron Bridge Manufacturing Company was contracted to build a stronger crossing for $2,730.
• Under the 1919 Highway Modernization Plan, the County chose to replace the bridge again. County Surveyor Edward A. Peugh designed the new structure, and in 1929, contractor Walter Lewis Proctor built the steel truss bridge for $14,783.

Why It Matters

• The Watmaugh Bridge is a piece of Sonoma County history, reflecting early transportation and community development.
• It provided a direct link from the south end of Sonoma to the lower Broadway area, improving regional connectivity.
• Historic bridges like this one help tell the story of infrastructure growth and community priorities over time.

What’s Next

• The County continues to document and evaluate the historic bridge.
• Any decisions about its future will balance safety, preservation, and transportation needs.
• Additional reports and community updates will guide next steps.

Learn More

Watmaugh Road Bridge Presentation (Remediated)

HAER Report – Watmaugh Road Bridge (#20C-0017) Acceptance Cover Letter