Ramp and Lane Closures on Highway 101 Through Buellton to Shift September 30

Date: Friday, September 11, 2026
District: 05 - Santa Barbara, San Luis Obispo, Monterey, San Benito, and Santa Cruz Counties
Contact: Heidi Crawford or Ashton Harris
Phone: (805) 549-3237 or (805) 549-3138

Ramp and Lane Closures on Highway 101 Through Buellton to Shift September 30

SANTA BARBARA COUNTY – Construction crews will continue work on the US 101 pavement rehabilitation project in Buellton as the project advances into another stage of construction.

Beginning Wednesday, September 30, motorists will encounter changes to full time on and off ramp closures as crews begin reconstructing additional highway ramps.

The following ramps will be fully closed throughout the next stage:

• US 101 Northbound Off-Ramp at State Route 246
• US 101 Southbound On-Ramp at State Route 246

The ramps should be reopened by early November 2026.

Detour routes will direct motorists to State Route 246 by using Santa Rosa Road exits to Avenue of Flags to get onto US 101 while the ramps are closed. Motorists are encouraged to follow posted detour signs and allow additional travel time while traveling through the work zone.

Current lane reductions on US 101 will remain in effect during this stage of construction. Motorists should anticipate travel delays, particularly during peak commute periods.

This work is part of a project to rehabilitate approximately ten miles of US 101 through Buellton. Improvements include shoulder reconstruction, concrete pavement replacement, asphalt overlay, ramp reconstruction, drainage improvements, electrical upgrades, and guardrail improvements.

Road information and updates are available on Caltrans District 5 social media platforms and QuickMap.

This project is expected to be completed by March 2027. The contractor for this $30 million project is CalPortland Construction of Santa Maria, CA.

  

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