Semi-Truck Collision Caused Multi-Vehicle Crash in Auburn

A semi-truck lost its brakes and struck seven other vehicles on SR 18, causing significant traffic delays.

Updated on Oct. 13, 2026 in Accidents

Bold flat-color editorial illustration showing a stark, geometric concrete highway overpass through morning haze, evoking the disruption of a major traffic incident. — A semi-truck brake failure triggered an eight-vehicle collision on SR 18 in Auburn this morning, causing significant traffic detours. AI Illustration. Upload story photo >

A multi-vehicle collision involving a semi-truck occurred this morning on eastbound SR 18 in Auburn. The crash involved eight total vehicles, and several drivers were transported to the hospital with non-major injuries.

Why it matters

The accident prompted the closure of eastbound SR 18, forcing commuters to use detour routes through the area. Authorities are investigating the mechanical failure that led to the incident near milepost 3.

The investigation remains active following the 8:05 a.m. collision near milepost 3. While the semi-truck was secured on the right shoulder, the primary cause of the mechanical brake failure has not been definitively established.

The players

SR 18

This major highway in Auburn served as the site of the multi-vehicle collision.

West Valley Highway

This local thoroughfare is currently serving as the official traffic detour for drivers impacted by the SR 18 closure.

The details

The semi-truck lost its brakes before striking seven other vehicles west of SR 167. Traffic has been diverted to West Valley Highway while emergency crews manage the scene.

The collision occurred at 8:05 a.m.
The semi-truck was observed on the shoulder at 8:45 a.m.

Legal Context

Commercial vehicle incidents involving mechanical failure are frequently reviewed against the Federal Motor Carrier Safety Administration's maintenance standards. These investigations determine whether strict equipment inspection protocols were followed to prevent road hazards.

Commuters should expect ongoing traffic delays on eastbound SR 18 while the investigation continues. Travelers are advised to use West Valley Highway to navigate around the road closure.

The takeaway

Drivers should maintain a safe following distance when traveling near commercial trucks on highways. If you experience mechanical failure, move to the shoulder as quickly and safely as possible to avoid major collisions.