US Bridges

SR 262 over Osullivan Dam Outlet

Fair

Grant County, Washington · 16.6 N JCT SR 26 · Structure no. 085904000000000

Built
1973
52 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
108 ft
4 main spans
Daily traffic
1,601
2023 count
Owner
Federal
Bureau of Reclamation

About this bridge

SR 262 over Osullivan Dam Outlet is a concrete slab carrying SR 262 over Osullivan Dam Outlet in Grant County, Washington. It was built in 1973, so it is 52 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 1,601 vehicles a day, roughly 7% of them trucks, projected to reach 2,124 by 2039. The structure is 108 ft (32.8 m) long and 32 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

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CarriesSR 262
CrossesOsullivan Dam Outlet
Location16.6 N JCT SR 26
RouteState Highway 262
CountyGrant County
StateWashington
Coordinates46.98301, -119.27557
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.1 US tons
Inventory rating47.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length108 ft (32.8 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,601 (2023)
Projected traffic2,124 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Reclamation
Maintained byBureau of Reclamation
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 262 over Osullivan Dam Outlet built?

It was built in 1973, making it 52 years old in 2025.

What condition is SR 262 over Osullivan Dam Outlet 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 February 2023.

How much traffic does SR 262 over Osullivan Dam Outlet carry?

About 1,601 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR 262 over Osullivan Dam Outlet?

The structure is 108 ft (32.8 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns SR 262 over Osullivan Dam Outlet?

It is owned by the Bureau of Reclamation.