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I-90 - WB Mercer Slough to W Lake Sammamish Parkway - Paving - Detour Routes

This paving project spans four and a half miles of westbound I-90 between Lake Sammamish and the I-405 interchange. Detours depend on the section of roadway being paved.

Detours for the following closures:

Westbound I-90 ramp to West Lake Sammamish Parkway S.E. (pdf 289 KB)

West Lake Sammamish Parkway S.E. ramp to westbound I-90 (pdf 291 KB)

Westbound I-90 HOV direct access off-ramp to 142nd Pl S.E. (pdf 181 KB)

Westbound I-90 off-ramp to S.E. Eastgate Way and 148th Ave/150th Ave (pdf 298 KB)

Richards Road Factoria Blvd on-ramps to westbound I-90 (pdf 331 KB)

I-90 westbound closure (pdf 297 KB)

Southbound 148th Ave S.E. ramp to westbound I-90 (pdf 183 KB)

150th Avenue S.E./156th Avenue S.E. ramps to westbound I-90 (pdf 262 KB)

Collector - distributor on-ramp to westbound I-90 (pdf 320 KB)

142nd Pl S.E. direct access on-ramp to westbound I-90 (pdf 292 KB)

I-90 westbound to I-405 (pdf 268 KB)

Southbound 148th Ave S.E. ramp to westbound I-90 (pdf 181 KB)