A major crash involving a large rig is causing an extended closure on the westbound 10 Freeway near Rosemead and San Gabriel, with the vehicle ending up on nearby MetroLink train tracks.
The unusual position of the truck, combined with damage to a concrete K-rail barrier, is complicating the cleanup and transportation response.
Officials are now expecting the closure to continue until approximately 10 a.m., according to information provided during a report from the scene.
What Happened
The big rig apparently overturned on the westbound side of the 10 Freeway near Del Mar Avenue, in the area between Rosemead and San Gabriel.
After flipping, the truck ended up on the MetroLink train tracks, creating an additional problem for crews working to clear the freeway.
The crash resulted in closures affecting the area between the El Monte station and Cal State LA.
The truck's position near the rail tracks is particularly significant because crews cannot simply treat the incident as a standard freeway crash. The proximity of the damaged barrier and active rail infrastructure means additional precautions are required before the area can fully reopen.
Why the Closure Is Expected to Last Until 10 a.m.
The extended closure appears to be connected in part to damage involving the K-rail, the concrete barrier separating traffic from the surrounding area.
While much of the crash debris has already been cleaned up, the damaged K-rail remains an issue because of its proximity to the MetroLink tracks.
A damaged barrier on the opposite side of a freeway might be easier to address while traffic continues moving elsewhere. In this case, however, the barrier is adjacent to the railroad tracks, adding another layer of safety concerns.
Crews must ensure that the damaged section is properly addressed before normal traffic and rail operations can safely resume.
Freeway and Rail Impact
The crash has created disruptions beyond the westbound freeway lanes.
The affected section stretches between the El Monte station and Cal State LA, with the MetroLink tracks becoming part of the incident because the overturned rig came to rest in that area.
The combination of freeway and rail infrastructure means multiple agencies and crews may need to coordinate before the entire area can return to normal operations.
Motorists traveling through the San Gabriel Valley should expect delays and consider alternate routes while the closure remains in place.
Which Lanes Are Closed?
According to the information provided from the scene, the FastTrack lanes and the two left lanes of the main westbound freeway lanes are closed.
The closures are expected to remain in effect while crews continue dealing with the crash scene and the damaged K-rail.
Drivers should use caution approaching the affected area and avoid attempting to enter closed lanes.
What Crews Are Dealing With
The overturned rig itself was a major part of the initial response, but the aftermath has created additional challenges.
The truck's location near the MetroLink tracks means crews must consider the condition of the railroad infrastructure as they work around the crash site.
The damaged K-rail is another concern. Even after debris from the crash is removed, a damaged concrete barrier may need to be inspected, repaired or replaced before authorities can determine that the roadway and surrounding infrastructure are safe.
This helps explain why the closure could continue for several hours even after much of the visible crash debris has been cleared.
What We Still Don't Know
Authorities have not immediately provided complete details about what caused the big rig to overturn or whether anyone was injured.
It is also unclear how long MetroLink operations may be affected by the truck's position on or near the tracks.
The exact repair process for the damaged K-rail has not been publicly detailed, and the estimated 10 a.m. reopening time could change depending on conditions at the scene.
A cautious view is that the 10 a.m. estimate should be treated as a target rather than a guarantee. Because the crash involves both freeway infrastructure and nearby railroad tracks, unexpected complications could force crews to keep the closure in place longer.
What Happens Next
Crews will continue clearing the crash scene and addressing the damaged K-rail.
Officials will also need to ensure that the area around the MetroLink tracks is safe before normal transportation operations can fully resume.
For motorists, the immediate priority is avoiding the affected portion of the westbound 10 Freeway and allowing crews sufficient space to work.
The incident is expected to continue affecting traffic through the morning commute, particularly as drivers encounter lane reductions and look for alternate routes.
The projected reopening time is around 10 a.m., but authorities may extend the closure if additional repairs or safety checks are necessary.