US Bridges

County RD 29 over Cabin Creek

Fair

Douglas County, Oregon · 3.0 MI N of Oakland · Structure no. 19C110002900059

Built
1980
45 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
86 ft
1 main span
Daily traffic
514
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 29 over Cabin Creek is a steel stringer/multi-beam or girder carrying County RD 29 over Cabin 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 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 514 vehicles a day, roughly 7% of them trucks, projected to reach 579 by 2025. The structure is 86 ft (26.2 m) long and 30 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCounty RD 29
CrossesCabin Creek
Location3.0 MI N of Oakland
RouteCounty Highway C0029
CountyDouglas County
StateOregon
Coordinates43.46784, -123.31552
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating71.4 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length86 ft (26.2 m)
Longest span49 ft (14.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic514 (2020)
Projected traffic579 by 2025
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 County RD 29 over Cabin Creek built?

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

What condition is County RD 29 over Cabin 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 County RD 29 over Cabin Creek carry?

About 514 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is County RD 29 over Cabin Creek?

The structure is 86 ft (26.2 m) long with a longest span of 49 ft (14.9 m) and a deck 30 ft wide.

Who owns County RD 29 over Cabin Creek?

It is owned by the County Highway Agency.