US Bridges

SW 27th Street over Springbrook Creek

Fair

King County, Washington · 0.2 MI West Lind Ave SW · Structure no. 085443000000000

Built
2000
25 years old
Condition
Fair
inspected June 2023
Type
Frame
Concrete
Length
31 ft
1 main span
Daily traffic
1,300
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW 27th Street over Springbrook Creek is a concrete frame carrying SW 27th Street over Springbrook Creek in King County, Washington. It was built in 2000, so it is 25 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 1,300 vehicles a day, roughly 32% of them trucks, projected to reach 1,600 by 2042. The structure is 31 ft (9.4 m) long and 92 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSW 27th Street
CrossesSpringbrook Creek
Location0.2 MI West Lind Ave SW
RouteCity Street 1070
Coordinates47.45561, -122.2275
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width92 ft (27.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2021)
Projected traffic1,600 by 2042
Trucks32%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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$2.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 27th Street over Springbrook Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is SW 27th Street over Springbrook Creek 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 June 2023.

How much traffic does SW 27th Street over Springbrook Creek carry?

About 1,300 vehicles per day (2021 count), of which roughly 32% are trucks.

How long is SW 27th Street over Springbrook Creek?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 92 ft wide.

Who owns SW 27th Street over Springbrook Creek?

It is owned by the City or Municipal Highway Agency.