Highway 1 Auxiliary Lane and Bus-on-Shoulder Project Construction Updates
The RTC is currently constructing the second phase of the Highway 1 Auxiliary Lanes and Bus-on-Shoulder project. Phase II from Bay Avenue/Porter Street to State Park Drive, including a new bicycle and pedestrian overcrossing at Mar Vista Drive and a replacement of the Capitola Avenue overcrossing, began construction in early 2024 and is expected to be completed in 2026. Phase I from 41st Avenue to Soquel Drive, including a new bicycle and pedestrian overcrossing at Chanticleer Avenue was completed in spring 2025.
Construction updates, including any road or highway closures or other activities that may impact traffic, will be posted weekly.
Phase 1: 41st Avenue to Soquel Drive
New Auxiliary Lanes Between 41st Avenue and Soquel Avenue/Drive and Chanticleer Bicycle & Pedestrian Overcrossing are now open
Phase 2: Bay/Porter to State Park Drive
Full Closures of Highway 1 Near Aptos for Scaffolding Installation Set For March 15 and 16
Travelers will encounter a full overnight closure of southbound Highway 1, at the Park Avenue interchange near Aptos Sunday, March 15, from 11 pm to 6 am.
In addition, travelers will encounter a full overnight closure of northbound Highway 1, at the State Park Avenue Interchange Monday, March 16, from 10 pm to 5 am.
Both closures will use Soquel Drive as the main detour.
Electronic messaging boards will alert travelers in advance of these lane closures. Travelers can expect delays of up to five minutes.
Over the two nights, Caltrans maintenance crews will be performing falsework installation along Highway 1.
Long Term Full Closure Of Southbound Highway 1 State Park Drive Off-Ramp for Soundwall Construction
Travelers will encounter a long-term full closure of the southbound Highway 1 State Park Drive off ramp beginning on Monday evening, January 26 beginning at 9:00 pm.
This closure is necessary for crews to make improvements with a focus on construction of the wood and metal framework, which will be built to support construction of the Soundwall along the southbound State Park Off-ramp.
The new soundwall along the southbound State Park Drive off‑ramp requires the ramp to be closed to allow for masonry block installation and concrete pours. This work is expected to take approximately three weeks. Once the operation is complete, the ramp will be reopened to traffic.
Monday evening, January 26 through February 26, 2026
Traffic Control:
During the full southbound State Park ramp closure, travelers will be directed to exit at Park Avenue off‑ramp interchange, turn left onto Park Avenue, then turn right onto southbound Soquel Drive before rejoining State Park Drive.
Capitola Avenue Overcrossing Now Open
The new Capitola Avenue Overcrossing replaces the aging former structure and provides significantly enhanced bicycle and pedestrian facilities, creating a safe and accessible crossing for people walking and biking while maintaining vehicle access across the highway. It improves connectivity between Soquel Drive to the north and the future Coastal Rail Trail to the south, linking neighborhoods, schools, parks, beaches, transit, and nearby commercial centers.
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