US Bridges

SR 903 over Roslyn CR

FairPosted for load

Kittitas County, Washington · 2.1 N JCT SR 903 Spur · Structure no. 000000DB0000000

Built
1938
87 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
5,966
2023 count
Owner
State
State Highway Agency

About this bridge

SR 903 over Roslyn CR is a concrete slab carrying SR 903 over Roslyn CR in Kittitas County, Washington. It was built in 1938, so it is 87 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. Its operating status is: posted for load restriction.

It carries about 5,966 vehicles a day, roughly 8% of them trucks, projected to reach 7,647 by 2039. The structure is 25 ft (7.6 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 903
CrossesRoslyn CR
Location2.1 N JCT SR 903 Spur
RouteState Highway 903
CountyKittitas County
StateWashington
Coordinates47.19664, -120.94464
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span22 ft (6.7 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,966 (2023)
Projected traffic7,647 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$356,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 903 over Roslyn CR built?

It was built in 1938, making it 87 years old in 2025.

What condition is SR 903 over Roslyn CR 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 August 2023.

How much traffic does SR 903 over Roslyn CR carry?

About 5,966 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 903 over Roslyn CR?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 25 ft wide.

Who owns SR 903 over Roslyn CR?

It is owned by the State Highway Agency.