SR 522 Ramp over Sammamish River

Fair Condition58 years old10,166 vehicles/day

Location

StateWashington
CountyKing
Location1.3 E Jct SR 527
CarriesSR 522 Ramp
CrossesSammamish River
Coordinates47.75697, -122.18622

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length303.1 ft (92.4 m)
Max Span103.0 ft (31.4 m)
Deck Width39.0 ft (11.9 m)
Deck Area1099.6 sq m
Main Spans4
Year Built1968

Traffic

Avg Daily Traffic10,166 (2023)
Truck Traffic5%
Lanes On Bridge1

Inspection & Ownership

Last Inspection924
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number0008382F0000000

Nearby Bridges