I-90

Route ID
090

SR 18 shifted into new, wider configuration to improve traffic flow, safety near I-90/SR 18 interchange

Project expected to wrap up construction in 2026

SNOQUALMIE – Eastbound and westbound State Route 18 reopened Monday, Oct. 20, with two lanes in each direction between Interstate 90 and Deep Creek, ushering in improved traffic flow and safety along a 2-mile stretch at the northern end of the SR 18 corridor. 

Bridge repairs to reduce westbound I-90 in Issaquah to a single lane for up to four weekends in September

Weekend lane reductions scheduled Sept. 5-7 and 12-14

ISSAQUAH – Westbound Interstate 90 in Issaquah will be reduced to a single lane to repair five bridges over a series of up to four weekends in September.

The first round-the-clock weekend lane reduction is scheduled from 9 p.m. Friday, Sept. 5, to 8 a.m. Sunday, Sept. 7. Up to three more weekend lane reductions will follow later in September, but wet weather may force work to be rescheduled.

Paving, bridge repair projects to reduce westbound I-90 in Issaquah to one lane for up to 10 weekends

Additional nighttime work to begin in July on eastbound I-90 

ISSAQUAH – A series of construction projects will repair and replace aging pavement and repair several bridges along the Interstate 90 corridor in Issaquah and from Mercer Island to Bellevue. 

People traveling through the area should expect weekend and nighttime I-90 lane reductions and ramp closures. This includes up to 10 weekends when westbound I-90 will be reduced to a single lane in Issaquah.

Slow down on ice and snow.

It's easier to skid or lose control traveling at higher speeds. Give yourself more time to stop.

Carry chains, practice installing them.

Winter conditions could mean chains are required on your route. Practice putting them on your vehicle ahead of time.

Pack your winter car kit.

Carry extra supplies like warm clothing, ice scraper and brush, jumper cables and other emergency items.