US Bridges

S Boeing Access RD over Bnrr

Fair

King County, Washington · 0.3 MI W of E Marginal Wy · Structure no. 080025000000000

Built
1945
80 years old, rebuilt 2018
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
337 ft
3 main spans
Daily traffic
32,504
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Boeing Access RD over Bnrr is a steel continuous stringer/multi-beam or girder carrying S Boeing Access RD over Bnrr in King County, Washington. It was built in 1945 and reconstructed in 2018, so it is 80 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 32,504 vehicles a day, roughly 22% of them trucks, projected to reach 44,000 by 2042. The structure is 337 ft (102.7 m) long and 82 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesS Boeing Access RD
CrossesBnrr
Location0.3 MI W of E Marginal Wy
RouteCity Street 1380
CountyKing County
StateWashington
Coordinates47.50761, -122.28453
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 15
Structure length337 ft (102.7 m)
Longest span91 ft (27.7 m)
Deck width82 ft (25.1 m)
Roadway width69 ft (21 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,504 (2022)
Projected traffic44,000 by 2042
Trucks22%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$28.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S Boeing Access RD over Bnrr built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 2018.

What condition is S Boeing Access RD over Bnrr in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does S Boeing Access RD over Bnrr carry?

About 32,504 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is S Boeing Access RD over Bnrr?

The structure is 337 ft (102.7 m) long with a longest span of 91 ft (27.7 m) and a deck 82 ft wide.

Who owns S Boeing Access RD over Bnrr?

It is owned by the City or Municipal Highway Agency.