US Bridges

Grayback Road over Grayback Creek

Fair

Josephine County, Oregon · 11MI E & 1MI S of · Structure no. 061104000001049

Built
1967
58 years old
Condition
Fair
inspected June 2024
Type
Frame
Concrete Continuous
Length
86 ft
3 main spans
Daily traffic
24
1993 count
Owner
Federal
U.S. Forest Service

About this bridge

Grayback Road over Grayback Creek is a concrete continuous frame carrying Grayback Road over Grayback Creek in Josephine County, Oregon. It was built in 1967, so it is 58 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 24 vehicles a day, projected to reach 36 by 2045. The structure is 86 ft (26.2 m) long and 17 ft wide.

Location

Open in Google Maps
CarriesGrayback Road
CrossesGrayback Creek
Location11MI E & 1MI S of
RouteFederal Lands Road 46110
CountyJosephine County
StateOregon
Coordinates42.1525, -123.40061
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 protection8 Very GoodNo problems noted.
Last inspectionJune 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55 US tons
Inventory rating32.1 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length86 ft (26.2 m)
Longest span58 ft (17.7 m)
Deck width17 ft (5.2 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 1967, making it 58 years old in 2025.

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 86 ft (26.2 m) long with a longest span of 58 ft (17.7 m) and a deck 17 ft wide.

Who owns Grayback Road over Grayback Creek?

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