Watsonville: $8.9 Million Harkins Slough Bridge Upgrade Aims to Improve School Walking and Cycling

WATSONVILLE, SANTA CRUZ COUNTY | October 18, 2026. A bridge used by students, pedestrians, cyclists and local drivers is undergoing a substantial safety improvement in Watsonville. According to Caltrans’ October 13 project announcement, work to widen the Harkins Slough Overcrossing at Highway 1 was scheduled to begin on Friday, October 16.

The agency identifies a $8.9 million construction project led by Granite Construction of Watsonville. It expects work to be completed by October 20, 2027, though weather, inspections and project changes can affect construction schedules.

Why this bridge matters for school access

The crossing links residential areas with important routes to Pajaro Valley High School. Caltrans says widening the bridge will improve conditions for people walking and biking, particularly students traveling to school from the surrounding neighborhoods. The agency’s statement refers to housing on the east side and travel to school from the west side of the overcrossing; the key issue is a safer connection for people on foot or bicycles alongside vehicle traffic.

The project isn’t described as a new grade-separated bridge replacing the entire Highway 1 freeway. Instead, Caltrans specifically describes widening an existing overcrossing to support safer nonmotorized use.

When will road users be delayed?

The state says flaggers may operate Monday through Friday, 9 a.m.–3 p.m., as needed, through the overpass work zone. Concrete barriers and temporary signs will guide pedestrians and cyclists during construction.

Those hours describe the announced traffic-management window, not a promise that the overcrossing will be open without interruption at all other times. People should follow posted route signs and flagger directions, and schools should communicate route changes directly to families when necessary.

What should families and cyclists do?

Check with the school or district for any updated recommendations for student travel to Pajaro Valley High School.
Do not use a narrow work area as a shortcut around construction barriers.
Watch for vehicles and construction equipment near crossing approaches.
Allow additional travel time on weekdays when daytime traffic control is active.
Use Caltrans QuickMap if a trip depends on current highway information.

What changes for residents?

The near-term effect is construction and possible travel delays. The long-term objective is a better physical connection for students, cyclists and pedestrians. California58 will distinguish the agency’s planned completion date from an actual opening announcement when final construction is finished.

Primary source: Caltrans District 5 Harkins Slough Overcrossing release. The project budget and schedule are agency estimates; this article does not claim completed construction or verified traffic patterns.

Original public-service reporting compiled October 18, 2026, from Caltrans documents. Check the latest agency and school communications before walking, biking or driving through the work area.