Seattle's SR 99 Bridge to Close for Repairs

Northbound lanes will be shut down for 3 days for stabilization work.

Published on Mar. 9, 2026

Got story updates? Submit your updates here. ›

The northbound lanes of the SR 99 First Avenue Bridge in Seattle will be closed from 5 a.m. on Monday through 8 p.m. on Wednesday as crews install steel plates to stabilize the structure.

Why it matters

The SR 99 bridge is a critical transportation artery in downtown Seattle, and the closure will cause significant traffic disruptions in the area during the repair work.

The details

Crews will be installing steel plates on the northbound lanes of the SR 99 First Avenue Bridge in order to stabilize the structure. The closure will last for 3 days, from early Monday morning through Wednesday evening.

  • The northbound lanes of the SR 99 bridge will be closed from 5 a.m. on Monday, March 11, 2026 through 8 p.m. on Wednesday, March 13, 2026.

The players

SR 99 First Avenue Bridge

A major bridge in downtown Seattle that carries northbound traffic on State Route 99.

Got photos? Submit your photos here. ›

What’s next

Drivers should plan for significant delays and consider alternate routes during the 3-day closure of the northbound SR 99 bridge.

The takeaway

This bridge closure will disrupt a critical transportation artery in Seattle, underscoring the need for ongoing infrastructure maintenance and investment to keep the city's roads and bridges functioning smoothly.