US Bridges

Teanaway Road over Teanaway River

Fair

Kittitas County, Washington · 07.09 N US 970 · Structure no. 080518000000000

Built
1960
65 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
136 ft
1 main span
Daily traffic
592
2018 count
Owner
County
County Highway Agency

About this bridge

Teanaway Road over Teanaway River is a concrete continuous box beam or girders - multiple carrying Teanaway Road over Teanaway River in Kittitas County, Washington. It was built in 1960, so it is 65 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 592 vehicles a day, roughly 20% of them trucks, projected to reach 1,569 by 2038. The structure is 136 ft (41.5 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesTeanaway Road
CrossesTeanaway River
Location07.09 N US 970
RouteCounty Highway 28500
CountyKittitas County
StateWashington
Coordinates47.2547, -120.8787
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating68 US tons
Inventory rating52 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 15
Structure length136 ft (41.5 m)
Longest span106 ft (32.3 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic592 (2018)
Projected traffic1,569 by 2038
Trucks20%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Teanaway Road over Teanaway River built?

It was built in 1960, making it 65 years old in 2025.

What condition is Teanaway Road over Teanaway River 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 September 2023.

How much traffic does Teanaway Road over Teanaway River carry?

About 592 vehicles per day (2018 count), of which roughly 20% are trucks.

How long is Teanaway Road over Teanaway River?

The structure is 136 ft (41.5 m) long with a longest span of 106 ft (32.3 m) and a deck 29 ft wide.

Who owns Teanaway Road over Teanaway River?

It is owned by the County Highway Agency.