US Bridges

SW Spokane ST over RR

Good

King County, Washington · SW Spokane St/Harbor Ave · Structure no. 086866000000000

Built
2001
24 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
8,297
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW Spokane ST over RR is a prestressed concrete stringer/multi-beam or girder carrying SW Spokane ST over RR in King County, Washington. It was built in 2001, so it is 24 years old, younger 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 8,297 vehicles a day, roughly 5% of them trucks, projected to reach 10,122 by 2042. The structure is 66 ft (20.1 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesSW Spokane ST
CrossesRR
LocationSW Spokane St/Harbor Ave
RouteCity Street 1140
CountyKing County
StateWashington
Coordinates47.57174, -122.37048
Functional classUrban Minor Arterial

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.4 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length66 ft (20.1 m)
Longest span66 ft (20.1 m)
Deck width40 ft (12.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,297 (2022)
Projected traffic10,122 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed—
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$815,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SW Spokane ST over RR built?

It was built in 2001, making it 24 years old in 2025.

What condition is SW Spokane ST over RR 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 October 2023.

How much traffic does SW Spokane ST over RR carry?

About 8,297 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is SW Spokane ST over RR?

The structure is 66 ft (20.1 m) long with a longest span of 66 ft (20.1 m) and a deck 40 ft wide.

Who owns SW Spokane ST over RR?

It is owned by the City or Municipal Highway Agency.