US Bridges

Wren Loop RD over Arkansas Creek

FairPosted for load

Cowlitz County, Washington · 0.02 S Delameter RD (0.17 · Structure no. 081961000000000

Built
1960
65 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
103 ft
4 main spans
Daily traffic
195
2020 count
Owner
County
County Highway Agency

About this bridge

Wren Loop RD over Arkansas Creek is a concrete continuous slab carrying Wren Loop RD over Arkansas Creek in Cowlitz County, Washington. It was built in 1960, so it is 65 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 195 vehicles a day, roughly 2% of them trucks, projected to reach 275 by 2040. The structure is 103 ft (31.4 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWren Loop RD
CrossesArkansas Creek
Location0.02 S Delameter RD (0.17
RouteCounty Highway 24510
Coordinates46.2675, -122.92917
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26 US tons
Inventory rating15 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span28 ft (8.5 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic195 (2020)
Projected traffic275 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wren Loop RD over Arkansas Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Wren Loop RD over Arkansas 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 September 2023.

How much traffic does Wren Loop RD over Arkansas Creek carry?

About 195 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Wren Loop RD over Arkansas Creek?

The structure is 103 ft (31.4 m) long with a longest span of 28 ft (8.5 m) and a deck 32 ft wide.

Who owns Wren Loop RD over Arkansas Creek?

It is owned by the County Highway Agency.