US Bridges

Alki Road over Burnt Bridge Creek

Fair

Clark County, Washington · 00.26 W NE Hazeldel · Structure no. 081843000000000

Built
1985
40 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
42 ft
1 main span
Daily traffic
65
2018 count
Owner
County
County Highway Agency

About this bridge

Alki Road over Burnt Bridge Creek is a concrete slab carrying Alki Road over Burnt Bridge Creek in Clark County, Washington. It was built in 1985, so it is 40 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 65 vehicles a day, roughly 5% of them trucks, projected to reach 65 by 2038. The structure is 42 ft (12.8 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesAlki Road
CrossesBurnt Bridge Creek
Location00.26 W NE Hazeldel
RouteCounty Highway 10430
Coordinates45.66138, -122.672
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2018)
Projected traffic65 by 2038
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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 Alki Road over Burnt Bridge Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Alki Road over Burnt Bridge 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 January 2024.

How much traffic does Alki Road over Burnt Bridge Creek carry?

About 65 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Alki Road over Burnt Bridge Creek?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns Alki Road over Burnt Bridge Creek?

It is owned by the County Highway Agency.