US Bridges

Singleton RD over Oak Creek

Fair

Douglas County, Oregon · 11.5 MI E of Roseburg · Structure no. 19C077007900069

Built
1980
45 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
188
2020 count
Owner
County
County Highway Agency

About this bridge

Singleton RD over Oak Creek is a steel stringer/multi-beam or girder carrying Singleton RD over Oak Creek in Douglas County, Oregon. It was built in 1980, so it is 45 years old, younger 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 188 vehicles a day, roughly 3% of them trucks, projected to reach 213 by 2025. The structure is 51 ft (15.5 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSingleton RD
CrossesOak Creek
Location11.5 MI E of Roseburg
RouteCounty Highway C0079
StateOregon
Coordinates43.27522, -123.18028
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating22.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length51 ft (15.5 m)
Longest span49 ft (14.9 m)
Deck width33 ft (10 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic188 (2020)
Projected traffic213 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Singleton RD over Oak Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Singleton RD over Oak 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 April 2023.

How much traffic does Singleton RD over Oak Creek carry?

About 188 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Singleton RD over Oak Creek?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 33 ft wide.

Who owns Singleton RD over Oak Creek?

It is owned by the County Highway Agency.