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San Mateo, CA Police Department
Thursday July 31st, 2025 :: 09:55 p.m. PDT

Advisory

FINAL UPDATE (10:18PM) **ROADS REOPENED** Collision Investigation at Alameda de las Pulgas and Highway 92

FINAL UPDATE   (10:18 PM): All affected roadways have been reopened, and emergency personnel have cleared the scene. 
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UPDATE (8:45PM): We anticipate another 1-2 hours for the road closure of Alameda de las Pulgas from Barneson to 20th Ave. and the Alameda/92 on/off-ramps. Thank you for your patience while we investigate this crash.

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San Mateo Police are currently investigating a serious traffic collision at the intersection of Alameda de las Pulgas and the Highway 92 on-ramp. To ensure the safety of first responders and preserve the integrity of the investigation, the following closures are in effect until further notice:

🚫 Roads Closed:

  • Eastbound Highway 92 off-ramp to Alameda de las Pulgas

  • Eastbound Highway 92 on-ramp from Alameda de las Pulgas

  • Alameda de las Pulgas in both directions from 20th Avenue to Barneson Avenue

Please avoid the area and use alternate routes. Expect delays and detours. Updates will be provided as they become available.

Thank you for your cooperation.

Address/Location
San Mateo, CA Police Department
200 Franklin Pkwy
San Mateo, CA 94403

Contact
Emergency: 9-1-1
Non-emergencies: 650-522-7700

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