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Cars stuck in bumper-to-bumper traffic on Highway 101 through SLO. Here’s why

Cars were stuck in bumper to bumper traffic on northbound Highway 101 going through San Luis Obispo on Aug. 11, 2025, due to a lane closure.
Cars were stuck in bumper to bumper traffic on northbound Highway 101 going through San Luis Obispo on Aug. 11, 2025, due to a lane closure. Caltrans
Key Takeaways
Key Takeaways

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  • Lane closure on Highway 101 in San Luis Obispo triggered major traffic delays.
  • Caltrans crews conducted median clean-up, railing repair and drain clearing.
  • Traffic persisted past Los Osos Valley Road after lanes reopened around 1:15 p.m.

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Cars were stuck in bumper-to-bumper traffic on Highway 101 going through San Luis Obispo on Monday due to a lane closure.

The center lane on northbound 101 was closed from Monterey Street to Stage Coach Road starting around 10:15 a.m., forcing traffic into one lane, according to the California Highway Patrol Traffic Incident Information Page.

Caltrans was seen on the highway cleaning garbage out of median, fixing the railing and clearing the drains of weeds.

At 12:35 p.m., Caltrans said it would be picking up cones on the road and ending the closure at around 1:15 p.m, according to the traffic incident information page.

Traffic was still backed up on northbound 101 to Los Osos Valley Road at 1:30 p.m. Streets connected to northbound off ramps were also full end to end.

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Chloe Shrager
The Tribune
Chloe Shrager is the courts and crimes reporter for The Tribune. She grew up in Palo Alto, California, and graduated from Stanford with a B.A. in Political Science. When not writing, she enjoys surfing, backpacking, skiing and hanging out with her cat, Billy Goat.
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