US Bridges

Road over Desolation Creek

Fair

Grant County, Oregon · No Data Entered · Structure no. 061405000001048

Built
1957
68 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
79 ft
3 main spans
Daily traffic
135
1989 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Desolation Creek is a wood or timber stringer/multi-beam or girder carrying Road over Desolation Creek in Grant County, Oregon. It was built in 1957, so it is 68 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 135 vehicles a day, roughly 15% of them trucks, projected to reach 202 by 2045. The structure is 79 ft (24 m) long and 16 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesRoad
CrossesDesolation Creek
LocationNo Data Entered
RouteFederal Lands Road 10000
CountyGrant County
StateOregon
Coordinates44.92135, -118.82929
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadOther
Structure length79 ft (24 m)
Longest span54 ft (16.6 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (1989)
Projected traffic202 by 2045
Trucks15%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 Desolation Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Road over Desolation Creek 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 Road over Desolation Creek carry?

About 135 vehicles per day (1989 count), of which roughly 15% are trucks.

How long is Road over Desolation Creek?

The structure is 79 ft (24 m) long with a longest span of 54 ft (16.6 m) and a deck 16 ft wide.

Who owns Road over Desolation Creek?

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