US Bridges

Ross Road over Turbine Canal

FairPosted for load

Kittitas County, Washington · 00.45 SE Morrison R · Structure no. 080887000000000

Built
1975
50 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
90
2021 count
Owner
County
County Highway Agency

About this bridge

Ross Road over Turbine Canal is a concrete slab carrying Ross Road over Turbine Canal in Kittitas County, Washington. It was built in 1975, so it is 50 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 90 vehicles a day, roughly 34% of them trucks, projected to reach 238 by 2041. The structure is 24 ft (7.3 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesRoss Road
CrossesTurbine Canal
Location00.45 SE Morrison R
RouteCounty Highway 65926
CountyKittitas County
StateWashington
Coordinates46.89344, -120.32454
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 rating15 US tons
Inventory rating12 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2021)
Projected traffic238 by 2041
Trucks34%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ross Road over Turbine Canal built?

It was built in 1975, making it 50 years old in 2025.

What condition is Ross Road over Turbine Canal 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 2024.

How much traffic does Ross Road over Turbine Canal carry?

About 90 vehicles per day (2021 count), of which roughly 34% are trucks.

How long is Ross Road over Turbine Canal?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 22 ft wide.

Who owns Ross Road over Turbine Canal?

It is owned by the County Highway Agency.