US Bridges

Hatton RD over Dry Relief

FairPosted for load

Adams County, Washington · 00.99 MI W SR21 · Structure no. 083776000000000

Built
1927
98 years old
Condition
Fair
inspected October 2024
Type
Girder and Floorbeam System
Concrete
Length
37 ft
1 main span
Daily traffic
21
2018 count
Owner
County
County Highway Agency

About this bridge

Hatton RD over Dry Relief is a concrete girder and floorbeam system carrying Hatton RD over Dry Relief in Adams County, Washington. It was built in 1927, so it is 98 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. Its operating status is: posted for other load-capacity restriction.

It carries about 21 vehicles a day, roughly 6% of them trucks, projected to reach 25 by 2039. The structure is 37 ft (11.3 m) long and 23 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesHatton RD
CrossesDry Relief
Location00.99 MI W SR21
RouteCounty Highway 42122
Coordinates46.76557, -118.56833
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 statusPosted for other load-capacity 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 rating31.1 US tons
Inventory rating23.9 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2018)
Projected traffic25 by 2039
Trucks6%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hatton RD over Dry Relief built?

It was built in 1927, making it 98 years old in 2025.

What condition is Hatton 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 Hatton RD over Dry Relief carry?

About 21 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Hatton RD over Dry Relief?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 23 ft wide.

Who owns Hatton RD over Dry Relief?

It is owned by the County Highway Agency.