I-90 over Yellowstone RD

Poor Condition57 years old17,215 vehicles/day

Location

StateWashington
CountyKittitas
Location0.3 E King Co
CarriesI-90
CrossesYellowstone RD
Coordinates47.41869, -121.41055

Condition Ratings

Overall ConditionPoor
Deck3 (Serious)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length194.9 ft (59.4 m)
Max Span82.0 ft (25 m)
Deck Width128.0 ft (39 m)
Deck Area2316.6 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic17,215 (2023)
Truck Traffic21%
Lanes On Bridge7
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number0008447B0000000

Nearby Bridges

I-90 over SR 906 W-w Ramp 0.6 mi Poor I-90 WB over So Fk Snoqulmie R 0.9 mi Poor I-90 over Coal CR 1.2 mi Fair I-90 over Avalanche Path 1.2 mi Fair SR 906 over Hyak Creek 1.3 mi Fair I-90 over Coal Creek 1.5 mi Fair Road over S Fk Snoqualmie River 1.6 mi Fair I-90 over Denny Creek 1.6 mi Fair I-90 over SR 906 1.6 mi Poor Road over S Fk Snoqualmie River 1.8 mi Good