US Bridges

Dewald RD over Intermittent Stream

Fair

Adams County, Washington · 2.11 MI N of Hiller Rd. · Structure no. 079705000000000

Built
1957
68 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
26 ft
2 main spans
Daily traffic
23
2018 count
Owner
County
County Highway Agency

About this bridge

Dewald RD over Intermittent Stream is a concrete slab carrying Dewald RD over Intermittent Stream in Adams County, Washington. It was built in 1957, so it is 68 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 23 vehicles a day, roughly 21% of them trucks, projected to reach 29 by 2039. The structure is 26 ft (8 m) long and 26 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesDewald RD
CrossesIntermittent Stream
Location2.11 MI N of Hiller Rd.
RouteCounty Highway 75484
CountyAdams County
StateWashington
Coordinates47.00154, -118.47187
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating15 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length26 ft (8 m)
Longest span13 ft (3.9 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23 (2018)
Projected traffic29 by 2039
Trucks21%
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 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 Dewald RD over Intermittent Stream built?

It was built in 1957, making it 68 years old in 2025.

What condition is Dewald RD over Intermittent Stream 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 Dewald RD over Intermittent Stream carry?

About 23 vehicles per day (2018 count), of which roughly 21% are trucks.

How long is Dewald RD over Intermittent Stream?

The structure is 26 ft (8 m) long with a longest span of 13 ft (3.9 m) and a deck 26 ft wide.

Who owns Dewald RD over Intermittent Stream?

It is owned by the County Highway Agency.