US Bridges

Ralston-Benge RD over Dry Wash

Good

Adams County, Washington · 00.65 MI E SR261 · Structure no. 082487000000000

Built
1956
69 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
30 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 1956, so it is 69 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 62 vehicles a day, roughly 26% of them trucks, projected to reach 90 by 2041. The structure is 30 ft (9.1 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesRalston-Benge RD
CrossesDry Wash
Location00.65 MI E SR261
RouteCounty Highway 52921
Coordinates46.95728, -118.32954
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 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 rating36.4 US tons
Inventory rating28.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span14 ft (4.4 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62 (2020)
Projected traffic90 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$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ralston-Benge RD over Dry Wash built?

It was built in 1956, making it 69 years old in 2025.

What condition is Ralston-Benge RD over Dry Wash in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. 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 30 ft (9.1 m) long with a longest span of 14 ft (4.4 m) and a deck 26 ft wide.

Who owns Ralston-Benge RD over Dry Wash?

It is owned by the County Highway Agency.