I-90 over Issaquah Creek

Good Condition56 years old46,269 vehicles/day

Location

StateWashington
CountyKing
Location0.9 E Jct SR 900
CarriesI-90
CrossesIssaquah Creek
Coordinates47.54447, -122.04495

Condition Ratings

Overall ConditionGood
Deck8 (Very Good)
Superstructure7 (Good)
Substructure8 (Very Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length126.0 ft (38.4 m)
Max Span51.8 ft (15.8 m)
Deck Width55.4 ft (16.9 m)
Deck Area649.0 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic46,269 (2023)
Truck Traffic7%
Lanes On Bridge3

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number0008573A0000000

Nearby Bridges

I-90 over Issaquah Creek 0.0 mi Good SE 62nd Street over Issaquah Creek 0.1 mi Good N.w.gilman Blvd. over Issaquah Ck. 0.2 mi Fair 4th AVE NW over North Fork Issaquah CR 0.2 mi Good I-90 WB On Ramp over 224th AVE NW & Trail 0.2 mi Fair I-90 over 4th AVE NW & Trail 0.2 mi Fair I-90 over 4th AVE NW & Trail 0.2 mi Fair N.w. Juniper St. over Issaquah Creek 0.4 mi Good E Lake Sammamish over N Fork Issaquah Creek 0.4 mi Good I-90 over Front Street 0.5 mi Good