Boulder Creek News: Highway 9 Bridge Replacement Advances at Kings Creek and San Lorenzo River in 2026

BOULDER CREEK NEWS | VERIFIED LOCAL REPORT • OCTOBER 2026

Caltrans undertook major work in 2026 to replace two Highway 9 bridges near Boulder Creek: Kings Creek Bridge and the San Lorenzo River Bridge. Temporary signals, alternating traffic and overnight closures have affected an important mountain-community route while crews construct new bridge structures.

What officials have documented

The agency’s project description identifies the San Lorenzo River crossing near post mile 13.6 and the Kings Creek crossing near post mile 15.5. The replacement structures are designed with 12-foot travel lanes and 8-foot outside shoulders. Caltrans announced temporary one-way reversing traffic in late April as signals were installed. A separate August notice described an overnight closure for setting approximately 100-foot precast bridge girders at Kings Creek.

Why the community should follow it

Residents use Highway 9 for daily travel, access to local services, deliveries and emergency routes. New bridges can address long-term structural and safety needs, but construction changes conditions from week to week. The April and August restrictions reported here are historical events, not assertions that the same closure is in effect today.

Next steps and local questions

Drivers should use current Caltrans travel advisories and QuickMap before making a trip, particularly during rain or construction. Boulder Creek News will continue to report announced phases, any new closures and final project milestones only from verified sources.

Official source

Caltrans — San Lorenzo River and Kings Creek Bridge Replacement.

YOUR LOCAL NEWSPAPER NEEDS YOU

Help this community newspaper grow

Your support helps build coverage for the people and places this local newspaper serves.

Donate once by card ↗

Help Boulder Creek News grow Help strengthen reporting on Boulder Creek: community voices, important decisions and local life.

Support Boulder Creek News

Choose how to support Boulder Creek News:

Credit / Debit Card via Stripe

Choose an amount from $1. One-time support through the publisher's LINKERNO Stripe account.

Continue with PayPal Continue with Zelle

Zelle payments go to Vitaly Ataev Troshin. Please verify the recipient in your bank before sending. Availability depends on your bank.

Optional reader support. When possible, add “Boulder Creek News” to the payment note. Contributions are not advertised as tax-deductible. Support does not influence editorial decisions.

Optional support through the publisher. Contributions are not advertised as tax-deductible and never buy editorial influence.

Boulder Creek News — Your Community Newspaper

Have a correction, news tip, local announcement, or story to submit? Contact our editorial team. All submissions are reviewed before publication.