Highway 41 closure reduced in SLO County. How long will it last now?
The closure of a 20-mile stretch of Highway 41 in eastern San Luis Obispo county next week won’t last as long as first thought, Caltrans has announced.
Originally, Caltrans planned to shut down the roadway for five days due to a $147 million construction project to build a flyover interchange at the Cholame “Y,” an area of Highway 46 that has been dubbed “Blood Alley.”
A total of 11 people died in crashes at or near the Y-shaped intersection from 2014 through 2024, resulting in a traffic fatality rate higher than the statewide average, according to previous Tribune reporting.
Roadwork on the section of Highway 41 — a vital path for drivers traveling between San Luis Obispo County and Fresno — will now last a total of three days, Caltrans said Wednesday in a post on X.
Caltrans crews are working to expand the two-lane Highway 41 into a four-lane expressway at the crossroads.
“(The) detour remains the same in each direction,” Caltrans said in its X post.
The agency did not immediately respond Friday afternoon to a Tribune request for information about why the closure time was trimmed.
Here’s what to know:
Where will Highway 41 closed due to construction?
Highway 41 will be closed between the Highway 46 East interchange and Reef Station near Highway 33, according to a Caltrans news release.
All businesses near the Highway 46 East corridor will remain open during the three-day closure, the state road agency said.
When will freeway be blocked to traffic?
Highway 41 will be shut down due to construction from Tuesday, June 10, through Thursday, June 12, Caltrans said.
Which detours can I take to avoid roadwork?
Travelers headed east on Highway 46 will proceed toward Bakersfield, before heading north on Highway 33 to get back to Highway 41, according to Caltrans.
Drivers who are traveling west on Highway 41 will take a detour onto Highway 33 to get to Highway 46, the state agency said.
“Delays resulting from this detour are not expected to exceed 90 minutes,” Caltrans said. “Travelers should plan their travel times accordingly.”
Why is SLO County highway closing for 3 days?
The major construction project is for a new Highway 46/Highway 41 Interchange in Cholame in northern San Luis Obispo County.
Caltrans said the upcoming closure must be done to complete connections between the new interchange and Highway 41.
“This project is part of a widening of Highway 46 East from west of Davis Road to west of Antelope Road,” Caltrans said in the release.
Construction will eventually result in the elimination of the at-grade intersection of Highway 46 and Highway 41, Caltrans said, made famous as the site of the deadly crash that killed actor James Dean in 1955.
Once complete, the elevated interchange at the Cholame “Y” will carry drivers over Highway 46 and merge them onto Highway 41 toward Fresno.
Atkinson Construction in Irvine is the contractor for the $147 million project, the state road agency said.
When will roadwork be complete?
Caltrans said the highway widening project is expected to be finished by spring 2026.
This story was originally published June 6, 2025 at 2:55 PM.
