US Bridges

Road over Log Creek

Good

Kittitas County, Washington · No Data Entered · Structure no. 061703000001481

Built
1978
47 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
50
1995 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Log Creek is a prestressed concrete box beam or girders - multiple carrying Road over Log Creek in Kittitas County, Washington. It was built in 1978, so it is 47 years old, younger 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 70 ft (21.2 m) long and 21 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRoad
CrossesLog Creek
LocationNo Data Entered
RouteFederal Lands Road 41100
Coordinates47.20806, -121.27694
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 inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating100.1 US tons
Inventory rating67.1 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadOther
Structure length70 ft (21.2 m)
Longest span66 ft (20.2 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1995)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 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 Log Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Road over Log 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 August 2024.

How much traffic does Road over Log Creek carry?

About 50 vehicles per day (1995 count).

How long is Road over Log Creek?

The structure is 70 ft (21.2 m) long with a longest span of 66 ft (20.2 m) and a deck 21 ft wide.

Who owns Road over Log Creek?

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