US Bridges

Downs Road over Crab Creek

Fair

Lincoln County, Washington · 3.50 N FAS B220 · Structure no. 082083000000000

Built
1973
52 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
53
2020 count
Owner
County
County Highway Agency

About this bridge

Downs Road over Crab Creek is a prestressed concrete tee beam carrying Downs Road over Crab Creek in Lincoln County, Washington. It was built in 1973, so it is 52 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 53 vehicles a day, roughly 40% of them trucks, projected to reach 100 by 2041. The structure is 80 ft (24.4 m) long and 28 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesDowns Road
CrossesCrab Creek
Location3.50 N FAS B220
RouteCounty Highway 20790
Coordinates47.31314, -118.42264
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span78 ft (23.8 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53 (2020)
Projected traffic100 by 2041
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$3.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Downs Road over Crab Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Downs Road over Crab 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 Downs Road over Crab Creek carry?

About 53 vehicles per day (2020 count), of which roughly 40% are trucks.

How long is Downs Road over Crab Creek?

The structure is 80 ft (24.4 m) long with a longest span of 78 ft (23.8 m) and a deck 28 ft wide.

Who owns Downs Road over Crab Creek?

It is owned by the County Highway Agency.