US Bridges

SR 522 over E-N Ramp Br

Good

King County, Washington · 1.3 E JCT SR 527 · Structure no. 0008382G0000000

Built
1968
57 years old, rebuilt 1998
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
210 ft
2 main spans
Daily traffic
1,285
2023 count
Owner
State
State Highway Agency

About this bridge

SR 522 over E-N Ramp Br is a concrete continuous box beam or girders - multiple carrying SR 522 over E-N Ramp Br in King County, Washington. It was built in 1968 and reconstructed in 1998, so it is 57 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,285 vehicles a day, roughly 5% of them trucks, projected to reach 2,411 by 2039. The structure is 210 ft (64 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR 522
CrossesE-N Ramp Br
Location1.3 E JCT SR 527
RouteState Highway 522
Coordinates47.75772, -122.18358
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length210 ft (64 m)
Longest span118 ft (36 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,285 (2023)
Projected traffic2,411 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 522 over E-N Ramp Br built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1998.

What condition is SR 522 over E-N Ramp Br in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does SR 522 over E-N Ramp Br carry?

About 1,285 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 522 over E-N Ramp Br?

The structure is 210 ft (64 m) long with a longest span of 118 ft (36 m) and a deck 33 ft wide.

Who owns SR 522 over E-N Ramp Br?

It is owned by the State Highway Agency.