US Bridges

Grayback Road over Grayback Creek

Fair

Josephine County, Oregon · 13MI E & 1MI S of 97523 · Structure no. 061104000001050

Built
1959
66 years old, rebuilt 2004
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
67 ft
1 main span
Daily traffic
24
1993 count
Owner
Federal
U.S. Forest Service

About this bridge

Grayback Road over Grayback Creek is a wood or timber stringer/multi-beam or girder carrying Grayback Road over Grayback Creek in Josephine County, Oregon. It was built in 1959 and reconstructed in 2004, so it is 66 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 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 24 vehicles a day, projected to reach 36 by 2045. The structure is 67 ft (20.3 m) long and 16 ft wide.

Location

Open in Google Maps
CarriesGrayback Road
CrossesGrayback Creek
Location13MI E & 1MI S of 97523
RouteFederal Lands Road 46110
CountyJosephine County
StateOregon
Coordinates42.1525, -123.40001
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating47.1 US tons
Inventory rating34.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1 (+2 approach)
Design loadOther
Structure length67 ft (20.3 m)
Longest span46 ft (14 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (1993)
Projected traffic36 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Grayback Road over Grayback Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2004.

What condition is Grayback Road over Grayback 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 June 2024.

How much traffic does Grayback Road over Grayback Creek carry?

About 24 vehicles per day (1993 count).

How long is Grayback Road over Grayback Creek?

The structure is 67 ft (20.3 m) long with a longest span of 46 ft (14 m) and a deck 16 ft wide.

Who owns Grayback Road over Grayback Creek?

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