US Bridges

Road over Taneum Creek

Good

Kittitas County, Washington · No Data Entered · Structure no. 061703000001490

Built
1960
65 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
67 ft
3 main spans
Daily traffic
75
1995 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Taneum Creek is a wood or timber stringer/multi-beam or girder carrying Road over Taneum Creek 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, projected to reach 112 by 2045. The structure is 67 ft (20.3 m) long and 17 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesRoad
CrossesTaneum Creek
LocationNo Data Entered
RouteFederal Lands Road 33300
Coordinates47.11428, -120.9118
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.1 US tons
Inventory rating34.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length67 ft (20.3 m)
Longest span46 ft (14 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (1995)
Projected traffic112 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road over Taneum Creek built?

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

What condition is Road over Taneum Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Road over Taneum Creek carry?

About 75 vehicles per day (1995 count).

How long is Road over Taneum Creek?

The structure is 67 ft (20.3 m) long with a longest span of 46 ft (14 m) and a deck 17 ft wide.

Who owns Road over Taneum Creek?

It is owned by the U.S. Forest Service.