Highway 1 Park Avenue Ramps to Reopen Prior to Long-Term Closure of Bay Avenue Ramps

A project to construct northbound and southbound auxiliary lanes and bus-on-shoulder improvements on Highway 1 between the Bay Avenue/Porter Street and State Park Drive interchanges continues with significant ramp changes coming in September.

The three Park Avenue ramps, which are currently closed, will reopen on Wednesday, September 3, at 9:00 pm. The Bay Avenue/Porter Street ramps will close the night of September 4 at 9:00 pm. 

Closure Details for Bay Avenue/Porter Street Ramps:
Date: Thursday, September 4
Time: 9:00 PM
Affected Ramps: The southbound Highway 1 off-ramp and the northbound Highway 1 on-ramp at Bay Avenue/Porter Street will be closed.

These closures will be in effect 24 hours a day, 7 days a week, for approximately 8 months to allow for the complete reconstruction of the ramps.

Detour routes will be available to guide motorists around the closures:

NB Bay Ave./Porter St. Detour:

• Travelers will be directed to use the SB Bay Ave./Porter St. on-ramp, exit at the SB Park Ave. off-ramp, and then re-enter Hwy. 1 using the NB Park Ave. on-ramp to reach the NB Bay Ave./Porter St. off-ramp. 

Caption: NB Bay Ave./Porter St. detour map.

SB Bay Ave./Porter St. Off-ramp Detour:

• Travelers will continue south on Hwy. 1, exit at the SB Park Ave. off-ramp, and then re-enter Hwy. 1 using the NB Park Ave. on-ramp to reach the NB Bay Ave./Porter St. off-ramp. 

Caption: SB Bay Ave./Porter St. Off-ramp detour map.

Project Background:
The contractor for this $78 million project is Granite Construction of Watsonville, CA and the project is expected to be completed by Fall of 2026. Updated project information for the improvements on Highway 1 between the Bay Ave./Porter St. and State Park Drive interchanges can be found on the Santa Cruz County Regional Transportation Commission’s website at: https://sccrtc.org/projects/streets-highways/hwy1/bayporter-statepark/

Road information and updates can also be found on Caltrans District 5 Social Media platforms: X/Twitter at: @CaltransD5, Facebook at: Caltrans Central Coast (District 5) and Instagram at: Caltrans_D5.

Our crews deserve to get home safely too.
Drive slowly and carefully in work zones.

CHP Traffic Incident Information Page: http://cad.chp.ca.gov
Traveler information at: https://quickmap.dot.ca.gov/

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