US Bridges

SW 34th Street over Springbrook Creek

Fair

King County, Washington · 0.2 MI West Lind Ave · Structure no. 087796000000000

Built
2007
18 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
1,900
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW 34th Street over Springbrook Creek is a concrete culvert carrying SW 34th Street over Springbrook Creek in King County, Washington. It was built in 2007, so it is 18 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 1,900 vehicles a day, roughly 29% of them trucks, projected to reach 2,900 by 2042. The structure is 30 ft (9.1 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSW 34th Street
CrossesSpringbrook Creek
Location0.2 MI West Lind Ave
RouteCity Street 1070
Coordinates47.44928, -122.22751
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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 rating78.9 US tons
Inventory rating60.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width65 ft (19.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2019)
Projected traffic2,900 by 2042
Trucks29%
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$656,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 34th Street over Springbrook Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is SW 34th 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 34th Street over Springbrook Creek carry?

About 1,900 vehicles per day (2019 count), of which roughly 29% are trucks.

How long is SW 34th Street over Springbrook Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 65 ft wide.

Who owns SW 34th Street over Springbrook Creek?

It is owned by the City or Municipal Highway Agency.