US Bridges

Road over S.Umpqua River

Fair

Douglas County, Oregon · No Data Entered · Structure no. 061502000001429

Built
1953
72 years old
Condition
Fair
inspected October 2023
Type
Frame
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
20
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over S.Umpqua River is a concrete continuous frame carrying Road over S.Umpqua River in Douglas County, Oregon. It was built in 1953, so it is 72 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 20 vehicles a day, projected to reach 30 by 2045. The structure is 120 ft (36.6 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesRoad
CrossesS.Umpqua River
LocationNo Data Entered
RouteFederal Lands Road 29000
CountyDouglas County
StateOregon
Coordinates43.04959, -122.70605
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment6: Equal to present minimum criteria
Operating rating33.1 US tons
Inventory rating22 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span80 ft (24.4 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2006)
Projected traffic30 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 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 S.Umpqua River built?

It was built in 1953, making it 72 years old in 2025.

What condition is Road over S.Umpqua River 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 October 2023.

How much traffic does Road over S.Umpqua River carry?

About 20 vehicles per day (2006 count).

How long is Road over S.Umpqua River?

The structure is 120 ft (36.6 m) long with a longest span of 80 ft (24.4 m) and a deck 16 ft wide.

Who owns Road over S.Umpqua River?

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