US Bridges

Suko RD over Dry Wash

Fair

Adams County, Washington · 00.09 MI N Lind-Ralston · Structure no. 081825000000000

Built
1949
76 years old, rebuilt 1972
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
12
2018 count
Owner
County
County Highway Agency

About this bridge

Suko RD over Dry Wash is a steel stringer/multi-beam or girder carrying Suko RD over Dry Wash in Adams County, Washington. It was built in 1949 and reconstructed in 1972, so it is 76 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 12 vehicles a day, roughly 6% of them trucks, projected to reach 15 by 2039. The structure is 26 ft (7.9 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSuko RD
CrossesDry Wash
Location00.09 MI N Lind-Ralston
RouteCounty Highway 75664
Coordinates46.96492, -118.40759
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating25.4 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span26 ft (7.8 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12 (2018)
Projected traffic15 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Suko RD over Dry Wash built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1972.

What condition is Suko 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 Suko RD over Dry Wash carry?

About 12 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Suko RD over Dry Wash?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.8 m) and a deck 24 ft wide.

Who owns Suko RD over Dry Wash?

It is owned by the County Highway Agency.