US Bridges

Grady Way over UPRR & Bnrr

Fair

King County, Washington · 0.1 MI E of Interurban · Structure no. 085436000000000

Built
1986
39 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,205 ft
11 main spans
Daily traffic
26,000
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Grady Way over UPRR & Bnrr is a prestressed concrete continuous stringer/multi-beam or girder carrying Grady Way over UPRR & Bnrr in King County, Washington. It was built in 1986, so it is 39 years old, younger 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 6 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 26,000 vehicles a day, roughly 7% of them trucks, projected to reach 28,000 by 2041. The structure is 1,205 ft (367.3 m) long and 61 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGrady Way
CrossesUPRR & Bnrr
Location0.1 MI E of Interurban
RouteCity Street 1288
CountyKing County
StateWashington
Coordinates47.46469, -122.24386
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20 + Mod
Structure length1,205 ft (367.3 m)
Longest span120 ft (36.6 m)
Deck width61 ft (18.7 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,000 (2021)
Projected traffic28,000 by 2041
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 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$71.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Grady Way over UPRR & Bnrr built?

It was built in 1986, making it 39 years old in 2025.

What condition is Grady Way over UPRR & 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 Grady Way over UPRR & Bnrr carry?

About 26,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Grady Way over UPRR & Bnrr?

The structure is 1,205 ft (367.3 m) long with a longest span of 120 ft (36.6 m) and a deck 61 ft wide.

Who owns Grady Way over UPRR & Bnrr?

It is owned by the City or Municipal Highway Agency.