US Bridges

Rosenoff RD over Intermittent Stream

Fair

Adams County, Washington · 03.02 MI E Grant CO · Structure no. 081945000000000

Built
1920
105 years old
Condition
Fair
inspected November 2023
Type
Other
Concrete
Length
50 ft
2 main spans
Daily traffic
407
2018 count
Owner
County
County Highway Agency

About this bridge

Rosenoff RD over Intermittent Stream is a concrete other carrying Rosenoff RD over Intermittent Stream in Adams County, Washington. It was built in 1920, so it is 105 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 5 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 407 vehicles a day, roughly 16% of them trucks, projected to reach 507 by 2039. The structure is 50 ft (15.3 m) long and 29 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesRosenoff RD
CrossesIntermittent Stream
Location03.02 MI E Grant CO
RouteCounty Highway 64601
CountyAdams County
StateWashington
Coordinates47.1299, -118.91703
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating63.9 US tons
Inventory rating39 US tons

Structure

Structure typeOther
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length50 ft (15.3 m)
Longest span25 ft (7.7 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic407 (2018)
Projected traffic507 by 2039
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rosenoff RD over Intermittent Stream built?

It was built in 1920, making it 105 years old in 2025.

What condition is Rosenoff 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 November 2023.

How much traffic does Rosenoff RD over Intermittent Stream carry?

About 407 vehicles per day (2018 count), of which roughly 16% are trucks.

How long is Rosenoff RD over Intermittent Stream?

The structure is 50 ft (15.3 m) long with a longest span of 25 ft (7.7 m) and a deck 29 ft wide.

Who owns Rosenoff RD over Intermittent Stream?

It is owned by the County Highway Agency.