US Bridges

SE 80th ST over Kimball Creek

Fair

King County, Washington · 0.4 MI W of SR-202 · Structure no. 084023000000000

Built
1929
96 years old, rebuilt 1965
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
44 ft
1 main span
Daily traffic
398
2019 count
Owner
County
County Highway Agency

About this bridge

SE 80th ST over Kimball Creek is a wood or timber stringer/multi-beam or girder carrying SE 80th ST over Kimball Creek in King County, Washington. It was built in 1929 and reconstructed in 1965, so it is 96 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 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 398 vehicles a day, roughly 5% of them trucks, projected to reach 720 by 2039. The structure is 44 ft (13.4 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSE 80th ST
CrossesKimball Creek
Location0.4 MI W of SR-202
RouteCounty Highway 87640
CountyKing County
StateWashington
Coordinates47.52889, -121.83344
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating27.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 15
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic398 (2019)
Projected traffic720 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 80th ST over Kimball Creek built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1965.

What condition is SE 80th ST over Kimball 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 August 2023.

How much traffic does SE 80th ST over Kimball Creek carry?

About 398 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is SE 80th ST over Kimball Creek?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 26 ft wide.

Who owns SE 80th ST over Kimball Creek?

It is owned by the County Highway Agency.