US Bridges

Hampton RD over Dry Relief

Fair

Adams County, Washington · 00.17 MI E SR21 · Structure no. 081936000000000

Built
1952
73 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
60 ft
3 main spans
Daily traffic
8
2018 count
Owner
County
County Highway Agency

About this bridge

Hampton RD over Dry Relief is a steel continuous stringer/multi-beam or girder carrying Hampton RD over Dry Relief in Adams County, Washington. It was built in 1952, so it is 73 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 8 vehicles a day, roughly 10% of them trucks, projected to reach 10 by 2039. The structure is 60 ft (18.4 m) long and 24 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesHampton RD
CrossesDry Relief
Location00.17 MI E SR21
RouteCounty Highway 42224
Coordinates46.78037, -118.54382
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 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 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 rating64.6 US tons
Inventory rating50 US tons

Structure

MaterialSteel Continuous
DeckCorrugated steel
Main spans3
Design loadUnknown
Structure length60 ft (18.4 m)
Longest span25 ft (7.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8 (2018)
Projected traffic10 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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$2.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hampton RD over Dry Relief built?

It was built in 1952, making it 73 years old in 2025.

What condition is Hampton RD over Dry Relief 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 Hampton RD over Dry Relief carry?

About 8 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is Hampton RD over Dry Relief?

The structure is 60 ft (18.4 m) long with a longest span of 25 ft (7.6 m) and a deck 24 ft wide.

Who owns Hampton RD over Dry Relief?

It is owned by the County Highway Agency.