US Bridges

Road over Slipper Creek

Good

Douglas County, Oregon · No Data Entered · Structure no. 061503000001469

Built
1973
52 years old
Condition
Good
inspected November 2024
Type
Frame
Concrete Continuous
Length
67 ft
3 main spans
Daily traffic
5
Owner
Federal
U.S. Forest Service

About this bridge

Road over Slipper Creek is a concrete continuous frame carrying Road over Slipper Creek in Douglas County, Oregon. It was built in 1973, so it is 52 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5 vehicles a day, projected to reach 7 by 2045. The structure is 67 ft (20.4 m) long and 19 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesRoad
CrossesSlipper Creek
LocationNo Data Entered
RouteFederal Lands Road 37010
StateOregon
Coordinates43.20373, -122.45167
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53 US tons
Inventory rating34.1 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length67 ft (20.4 m)
Longest span43 ft (13.1 m)
Deck width19 ft (5.9 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (—)
Projected traffic7 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 Slipper Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Road over Slipper Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Road over Slipper Creek carry?

About 5 vehicles per day (latest count).

How long is Road over Slipper Creek?

The structure is 67 ft (20.4 m) long with a longest span of 43 ft (13.1 m) and a deck 19 ft wide.

Who owns Road over Slipper Creek?

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