Montecito's Third Freeway Lane Is Due by Year's End. The Cabrillo Exits Stay Closed Until 2028.

"You aren't going to recognize it for a few years." That's how Marjorie Kirn, executive director of the Santa Barbara County Association of Governments, described the Highway 101 interchange at Cabrillo Boulevard to KEYT on October 13. The same report said the Montecito widening segment is scheduled to finish by the end of 2026.

The lanes through Montecito are nearly done. The exits many Montecito drivers used to reach the beach, the Bird Refuge and Coast Village Road belong to a separate contract with a later end date, and the detours that came with it are now part of the daily drive. Kirn called this last stretch "the most difficult," and said crews are "redoing the entire freeway there."

Two projects share one stretch of freeway

The work Montecito has lived with since 2023 is officially the Montecito segment. SBRoads, the project's public information site, defines it as running from the Romero Creek Bridge to Olive Mill Road, with construction scheduled from mid-June 2023 through 2026 and landscaping continuing into 2027. Once it's finished, that stretch will have three lanes in each direction, which is the milestone KEYT reported for year's end.

The final project, Highway 101: Santa Barbara North, covers Hermosillo Road to Salinas Street. According to the SBCAG announcement from March 23, 2026, construction began Monday, April 6, and continues through 2028. When it's done, the corridor will have 10.9 miles of continuous peak-period carpool lanes.

Between those two segments sits a third section, which the project's construction updates call Santa Barbara South, where crews this summer were removing old median pavement and finishing the sound wall. Santa Barbara North begins at Hermosillo, the last exit before the Cabrillo interchange, and the Cabrillo interchange is the heart of that work. The lanes finishing this winter belong to the Montecito segment. The exits at Cabrillo and Los Patos belong to Santa Barbara North.

The Santa Barbara Independent put the stakes in numbers in September. About 109,000 vehicles a day use this stretch of the 101, the 12-mile drive from Santa Barbara to Carpinteria can take as long as 40 minutes during construction, and the project's remaining work should be finished by 2028.

Where the exits stand in early November

The Cabrillo changes happened in two steps. The northbound left-side Cabrillo off-ramp closed early in the Santa Barbara North work. Then on June 13, according to the construction update Edhat published for June 14 to 27, new southbound lanes and ramps opened through Montecito and the southbound Cabrillo off-ramp closed. The same update said the traffic signal at the southbound off-ramp intersection with Hot Springs Road and Cabrillo would be removed, and that temporary stop signs had gone in at Olive Mill and Spring Roads.

Here is how the exits stand according to the current SBRoads construction update and the project's planning documents.

The SBCAG release in March first sent southbound Los Patos traffic to the southbound Cabrillo off-ramp. That plan ended when the Cabrillo ramp closed in June, so drivers who used to exit at Los Patos now use the Spring/Olive Mill off-ramp as well. The June update also said the Olive Mill and Posilipo southbound on-ramps reopened on the same day.

The Los Patos closure is the one change that won't be reversed. Noozhawk reported in March that the ramp passes under a railroad bridge with 12 feet of clearance, compared with the 16-foot standard, and that trucks have hit the bridge in the past. At a public meeting, a business owner at The Post in Montecito asked whether the exit could be saved, and First District Supervisor Roy Lee raised the question. Project staff said the ramp couldn't be brought up to standard.

The detours run down Coast Village Road

When off-ramps close, the traffic shifts to surface streets, and Coast Village Road has taken much of it. In April, a signal went in at Coast Village Road and Hermosillo Drive. The Montecito Journal reported on July 21 that the signal was described as "temporary," and quoted a statement from the Montecito Community Connect Group:

"The gridlock on Coast Village Road due to the new traffic signal extends the full length of Montecito from Sheffield past the tennis courts approaching Salinas and up and along Hot Springs, up San Ysidro and on to East Valley Road."

A letter to the Montecito Journal in September described daily heavy traffic and long lines around the roundabout and overpass construction. In the KEYT report, driver Becky Truckenmiller said she hoped the project would bring back the freeway as the way home: "When you are on the freeway you want to get home you don't want to take off and go this way on Coast Village."

This is where the two timelines matter. A third lane through Montecito adds capacity on the freeway. It doesn't give back the Cabrillo exits, so through 2028, northbound drivers headed toward the Cabrillo area will keep leaving at Hermosillo and southbound drivers will keep leaving at Spring/Olive Mill. The completed roundabouts at Olive Mill and San Ysidro are the permanent part of the surface-street network. SBRoads describes the Olive Mill roundabout as linking Coast Village Road, North Jameson Lane, Olive Mill Road and the freeway ramps.

What arrives on which date

Each stage after this winter has its own date, and the dates aren't spread evenly.

1. End of 2026. The Montecito segment is scheduled to finish, with three lanes through Montecito. The Independent added that median and pavement work plus landscaping will follow for another couple of years.
2. Into 2027. SBRoads expects landscaping on the Montecito segment to continue into 2027. In the KEYT report, Montecito resident Elizabeth Bingham said she would like to see "some more foliage" once the work is done.
3. About another year after that. Kirn told KEYT the Hot Springs Road and Cabrillo Boulevard work needs about another year to reconfigure the carpool lanes and ramps.
4. Summer 2028. The Cabrillo off-ramps are posted closed until then. SBCAG says Santa Barbara North continues through 2028.
5. 2028 or later. The City of Santa Barbara's work on the Cabrillo railroad underpass is expected to start.

The rebuilt Cabrillo interchange will work differently from the old one. SBCAG lists two new bridges, on- and off-ramps that enter and exit from the right-hand lane, a new southbound on-ramp, and a teardrop roundabout at Cabrillo Boulevard and the northbound ramps. Noozhawk placed that roundabout next to the northbound ramps near the Montecito Country Club along Old Coast Highway. Santa Barbara Mayor Randy Rowse said in the SBCAG release, "I'm especially glad to see the new southbound on-ramp at Cabrillo Boulevard, making freeway access safer and simpler for everyone."

The rebuilt lanes will also use Continuously Reinforced Concrete Pavement. SBCAG describes it as longer-lasting and quieter, which should help reduce neighborhood noise.

The underpass is the slowest piece. The City of Santa Barbara has already finished the first phase, the Cabrillo and Los Patos roundabout, which it announced as complete on May 30, 2025. It added crosswalks with pedestrian islands and a northbound bike and pedestrian lane on Channel Drive. The second phase replaces the Union Pacific bridge over Cabrillo Boulevard. The city's fact sheet says that phase is in final design and is meant to tie into the last Highway 101 interchange work. The Independent reported in September that Union Pacific was about 30 percent through its review, that construction is expected to start in 2028, and that the roughly $50 million project will add pedestrian and bike paths between Montecito and the beach.

The current overnight schedule

SBRoads posts its closures in two-week blocks, and the current block runs from October 25 to November 7. The Montecito item for this block is southbound grinding at night, which SBRoads warns "will be noisy." The posted speed limit through the construction zone is 55 mph.

The nightly closures in this block follow a set pattern:

• Northbound lanes, Evans Avenue to Olive Mill Road, narrow to one lane. The hours are 9 p.m. to 5 a.m. on Sundays and 8 p.m. to 5 a.m. Monday through Thursday.
• San Ysidro Road on- and off-ramps close overnight in the northbound direction, and the Olive Mill Road off-ramp closes on the same nights.
• Sheffield Drive on-ramp closes nightly from 8 p.m. to 5 a.m.
• Southbound lanes, Milpas Street to Sheffield Drive, narrow to one lane from 8 p.m. to 7 a.m. Monday through Thursday. The southbound San Ysidro off-ramp also closes overnight.

The last listed night in this block is Thursday, November 5, and a new two-week schedule will replace it. Crews have kept two lanes open in each direction during the day while handling the heavy work overnight, which matches the approach SBCAG described for Santa Barbara North. If you drive this stretch after 8 p.m., check the SBRoads update page before you leave. It's also the most reliable source for when the year-end lane milestone actually opens.

For anyone deciding whether to buy or sell near Hermosillo, Olive Mill, Los Patos or the Cabrillo interchange, how you get to the freeway will change on its own schedule between now and 2028. If you want to talk through how those dates affect access to a specific property, Kendrick Guehr can go over the timeline with you and help you plan around it. Work With Kendrick.