Major Traffic Disruption on U.S. Highway 101

Traffic Collision on U.S. Highway 101 in San Mateo Causes Significant Delays Today

📍 San Mateo, CA

📅 Published: April 2, 2025 at 04:06 PM

🔄 Updated: April 2, 2025 at 05:32 PM

Map showing the location of the accident in San Mateo, CA
San Mateo, April 2, 2025 -

A significant traffic incident occurred today on southbound U.S. Highway 101 (SB101) at the interchange with State Route 92 East in San Mateo, CA, leading to substantial traffic disruptions. The collision involved one vehicle, a green Toyota SNA, which has been towed from the scene.

Emergency response teams were quickly deployed to manage the situation and control traffic flow. The incident resulted in lane closures, including a mainline closure and slow lane conditions, causing significant delays and congestion for drivers in the area.

As the response unfolded, the #4 lane on the mainline was closed, along with the #1 lane leading to eastbound State Route 92. A signal alert was issued to inform motorists of the ongoing situation and to encourage them to seek alternate routes.

By mid-afternoon, traffic on southbound U.S. Highway 101 was experiencing backups, with only the #5 lane remaining closed. Authorities worked diligently to restore normal traffic flow as quickly as possible.

Drivers are advised to stay updated on traffic conditions and plan their routes accordingly to navigate through San Mateo, CA, as the situation continues to develop.

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