US Bridges

Ralston-Benge RD over Dry Wash

Fair

Adams County, Washington · 01.76 MI E SR261 · Structure no. 082208000000000

Built
1900
125 years old, rebuilt 1957
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
25 ft
2 main spans
Daily traffic
62
2020 count
Owner
County
County Highway Agency

About this bridge

Ralston-Benge RD over Dry Wash is a concrete slab carrying Ralston-Benge RD over Dry Wash in Adams County, Washington. It was built in 1900 and reconstructed in 1957, so it is 125 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.

It carries about 62 vehicles a day, roughly 26% of them trucks, projected to reach 75 by 2041. The structure is 25 ft (7.6 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesRalston-Benge RD
CrossesDry Wash
Location01.76 MI E SR261
RouteCounty Highway 52921
CountyAdams County
StateWashington
Coordinates46.95749, -118.30622
Functional classRural Minor 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
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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span13 ft (3.9 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62 (2020)
Projected traffic75 by 2041
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ralston-Benge RD over Dry Wash built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1957.

What condition is Ralston-Benge RD over Dry Wash 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 October 2024.

How much traffic does Ralston-Benge RD over Dry Wash carry?

About 62 vehicles per day (2020 count), of which roughly 26% are trucks.

How long is Ralston-Benge RD over Dry Wash?

The structure is 25 ft (7.6 m) long with a longest span of 13 ft (3.9 m) and a deck 24 ft wide.

Who owns Ralston-Benge RD over Dry Wash?

It is owned by the County Highway Agency.