I-90 over Avalanche Path

Fair Condition55 years old18,894 vehicles/day

Location

StateWashington
CountyKing
Location20.5 E Jct SR 202
CarriesI-90
CrossesAvalanche Path
Coordinates47.42466, -121.43507

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure7 (Good)
Scour Critical9 — Foundation above flood level

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length700.1 ft (213.4 m)
Max Span350.1 ft (106.7 m)
Deck Width55.1 ft (16.8 m)
Deck Area3585.1 sq m
Main Spans2
Year Built1971

Traffic

Avg Daily Traffic18,894 (2023)
Truck Traffic18%
Lanes On Bridge3

Inspection & Ownership

Last Inspection824
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number0008844A0000000

Nearby Bridges

I-90 over Denny Creek 0.7 mi Fair I-90 WB over So Fk Snoqulmie R 0.7 mi Poor Road over S Fk Snoqualmie River 0.9 mi Fair I-90 over SR 906 W-w Ramp 0.9 mi Poor I-90 over Yellowstone RD 1.2 mi Poor Road over S Fk Snoqualmie River 1.3 mi Good I-90 over Coal CR 2.1 mi Fair SR 906 over Hyak Creek 2.2 mi Fair EB I-90 over Olallie Creek 2.4 mi Fair I-90 over Coal Creek 2.5 mi Fair