Drivers on the 105 Freeway should plan ahead this weekend, when two center lanes will close in one direction as crews continue work on one of Los Angeles County’s biggest transportation projects.
The closures are part of the I-105 ExpressLanes Project, a roughly $1.4 billion undertaking that is converting the freeway’s existing carpool lane into two ExpressLanes in each direction between the I-405 and I-605. Metro says the project is expected to continue through 2029.
Two center lanes will close this weekend
The next extended closure is scheduled for tonight, Friday September 11, Saturday, September 12, and Sunday, September 13, affecting westbound I-105 between Wilmington Avenue and the I-110 Freeway. The two center inside lanes — the existing HOV lane and No. 1 lane — will be closed as crews work on overhead sign structures needed for the ExpressLanes project. The westbound Wilmington Avenue on-ramp will also be closed.
Importantly, the remaining travel lanes will stay open. Metro says traffic-control measures and advance signs will be in place to guide drivers through the work area, although motorists should expect the construction to affect their trip.
Another extended closure is already scheduled for September 26–27, when eastbound I-105 lanes will close between I-405 and Crenshaw Boulevard. Corresponding on-ramps may also be closed as needed. Metro says these weekend closures are part of a series that will occur intermittently from spring 2026 through early 2027 as crews install the infrastructure needed for the new ExpressLanes.
What the $1.4 billion project will change
When complete, the I-105 ExpressLanes Project will create two ExpressLanes in each direction along the 105 between the I-405 and Studebaker Road near I-605.
The project is being built in three segments. The first runs from Sepulveda Boulevard to Central Avenue, while the second covers Central Avenue to I-710 and the third extends from I-710 to Studebaker Road. Construction on the first segment began in 2025, while work on the other sections is getting underway in 2026.
The new lanes are designed to improve traffic flow, reduce stop-and-go conditions and provide a faster, more reliable option for people traveling across the corridor. Carpools and buses will be able to use the ExpressLanes toll-free, while solo drivers will be able to pay a variable toll based on congestion.
The C Line will have a bus bridge
Metro will also provide a C Line bus bridge during the closures. The agency notes that construction schedules can change depending on progress and weather, so drivers are encouraged to check the latest Metro advisories before heading out.
For now, the biggest takeaway is simple: if the 105 is part of your weekend plans, expect construction and give yourself extra time as crews continue building the freeway’s future ExpressLanes system.
