top of page
Construction Update

Timeframe: May 28 - June 10, 2023 *2-week update

Spotlight:  The Olive Mill Roundabout is partially open (see photo above). Please note there are temporary stop signs at each leg of the roundabout as construction continues. Highway 101: Montecito will start construction mid-June. Please see start of construction details below and join us for a community meeting at the Montecito Inn on June 1 at 4:00 pm.

Closures (weather permitting)

Please drive safely through the corridor and remember to Slow for the Cone Zone. The speed limit is reduced to 55 mph for safety throughout the construction areas. Two freeway lanes remain open in each direction during daytime hours.


  • Northbound Highway 101

    • Sunday nights, 9:00 pm - 5:00 am, 1 lane: Santa Monica Rd to Sheffield Dr 

    • Monday - Thursday nights, 8:00 pm – 5:00 am, 1 lane: Santa Monica Rd to Sheffield Dr

      • Off-ramp at Sheffield Dr, May 30 and 31, 8:00 pm to 5:00 am  

    • On-ramp at S Padaro/Santa Claus Ln, closed until late August, drivers can use Via Real and the northbound on-ramp at N Padaro Ln 

    • Off-ramp at N Padaro Ln, reopening June 5, drivers can use the off-ramp at Lillie Ave and Via Real during closure

    • On-ramp at San Ysidro, closed until early 2025 (for roundabout and highway work), drivers can use the northbound on-ramp at Sheffield Dr

    • Off-ramp at Olive Mill, reopening June 12, drivers can use the northbound off-ramp at San Ysidro Rd during closure

  • Southbound Highway 101

    • Sunday nights, 10:00 pm - 7:00 am, 1 lane: Sheffield Dr to Carpinteria Ave

      • On-ramp at N Padaro Ln, May 28, 10:00 pm - 7:00 am

    • Monday - Thursday nights, 9:00 pm – 7:30 am, 1 lane:  Sheffield Dr to Carpinteria Ave

    • Monday - Thursday days

      • On-ramp at S Padaro/Santa Claus Ln, May 30 - June 1, 9:00 am - 3:00 pm

      • Off-ramp at Carpinteria Ave, June 1 & 2, 9:00 am - 3:00 pm

  • Carpinteria Ave from Estero St to Hwy 101

    • Flaggers will direct traffic (as needed) as crews pave and resurface Carpinteria Ave June 1 & 2. Access to the ROW businesses will be open off of Estero Street during paving. 

  • N Jameson Ln

    • Week of May 28:  flaggers will direct traffic between the northbound off-ramp at Sheffield Dr to Ortega Hill Road for vegetation removal and fencing installation.


Please note:  consecutive ramps in the same direction will not be closed at the same time (unless where noted) to allow drivers to use a ramp before or after a closure. To view timelines, detours, and maps, please visit and select the project segment. 

Highway 101: Montecito
The Highway 101 improvements in the Montecito segment will begin mid-June. Please join us on June 1 at 4:00 pm at the Montecito Inn for a community meeting to discuss the upcoming construction strategy. Work will begin on the San Ysidro Overcrossing in conjunction with the San Ysidro Roundabout.

Olive Mill Roundabout

The majority of construction occurs between 7:00 am and 4:30 pm. 

  • Crews will work on the northern corners of the intersection on drainage, electrical, and roadway improvements. Please remember there is a pedestrian detour in place during the work in this area and expect temporary stop signs for each leg of the roundabout as construction continues.

  • Please note that the northbound off-ramp at Olive Mill Rd will reopen before the closure of the northbound off-ramp at San Ysidro Rd.

  • Please expect 5-10 minute delays throughout the construction area. 

San Ysidro Roundabout
The majority of construction occurs between 7:00 am and 4:30 pm. 

  • Crews will continue work in the northwest corner of the intersection of N Jameson Ln and San Ysidro Rd as well as at the northbound on-ramp at San Ysidro Rd and the overcrossing sidewalk by the ramp over the next two weeks. Starting in mid-June, crews will shift to work on the roundabout, the northbound on- and off-ramps, and the bridge rails on the overcrossing.  

  • Crews will continue work on the underground supports (piles) for a new retaining wall by the northbound on-ramp. 

  • Utility companies will also continue work in the area and along N Jameson Ln. Please expect flaggers directing traffic as needed for the roundabout project and utility work. Please expect 5-10 minute delays.


Highway 101:  Summerland
The Summerland segment is located between Sheffield Drive and North Padaro Lane.

  • Highway 101 

    • Median

      • Crews will pour concrete, construct safety barriers, and continue roadway and drainage improvements.

  • Evans Avenue Undercrossing & southbound off-ramp

    • Work continues on retaining and wing walls and slope paving (see photo above).

  • N. Jameson Lane

    • Crews will remove vegetation and install fencing between the Sheffield northbound off-ramp and Ortega Hill Road. Please expect flaggers directing traffic as needed for this work. 


Highway 101:  Padaro
The Padaro segment is located between North Padaro Lane and Santa Claus Lane. 

  • Highway 101 & ramps

    • Northbound lanes and ramps

      • Crews will continue roadwork, drainage and electrical improvements, and installation of overhead signs.

      • Northbound on-ramp at S Padaro/Santa Claus Ln and off-ramp at N Padaro Ln

        • Crews will grade soils, continue drainage improvements, install electrical systems and signs.

  • Toro & Arroyo Parida Creek Bridges

    • Crews will remove the old bridge at Toro Creek on the northbound side and begin site preparations for work at Arroyo Parida Creek.

  • S Padaro Ln Undercrossing

    • Crews will work on footings for the side walls (abutments). 

  • N Padaro Interchange

    • The concrete mix site is located at the southbound Highway 101 on-ramp at N. Padaro Ln. Please expect noise as trucks enter and exit the site and materials are delivered.

    • By mixing concrete on-site, the project saves an estimated 463,771 truck miles, reduces water use by 400,000 gallons (concrete mixed on-site uses less water), and saves taxpayers between $10-$15 million.

    • Concrete recycling continues by the northbound Highway 101 off-ramp at N. Padaro Ln.

  •  Sound walls

    • Northbound 

      • Crews will begin excavation for sound wall footings.


Santa Claus Lane Bikeway
The Santa Claus Lane Bikeway is located between Santa Claus Lane and Carpinteria Avenue between the freeway and railroad tracks.

  • Along Highway 101 - Finishing work will continue on permanent safety barriers and lane striping. 

  • Carpinteria Avenue - Between the intersection with Estero St and the southbound off-ramp, crews will continue work on a new median island (see photo above) and pave. Access to the ROW businesses will be open off of Estero Street during paving. Crews will also install irrigation, landscaping, and signs. Please expect flaggers directing traffic as needed and daytime noise. 


Highway 101:  Carpinteria
The Carpinteria segment is located between Santa Claus Lane and Bailard Avenue. 

  • Landscaping

    • Work will continue in the shoulder areas on southbound and northbound Highway 101 at Bailard Ave to install irrigation lines. Planting will continue on both sides of the freeway up to Santa Monica Rd where irrigation has been installed (see photo above).

Santa Claus Bikeway Logo-Web.png
Carpinteria Camera
Padaro Logo.png
Padaro Logo.png
Padaro Camera

South Padaro Improvements

Padaro Logo.png

Toro Creek Improvements

Summerland Logo.png
Summerland Camera

Sheffield Dr. Improvements

Summerland Logo.png

Evans Ave. Improvements


Highway 101: Carpinteria to Santa Barbara is a project undertaken by Caltrans and SBCAG in cooperation with local agencies to add a new carpool lane in each direction between Carpinteria and Santa Barbara. The project will improve bridges, interchanges, on- and off-ramps, and add sound walls.

bottom of page