US Bridges

Or 38 (hwy 045) over Koepke Slough

Fair

Douglas County, Oregon · 04.1 MI E HWY 009 JCT · Structure no. 01683 045 00411

Built
1933
92 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
3,998
2022 count
Owner
State
State Highway Agency

About this bridge

Or 38 (hwy 045) over Koepke Slough is a concrete continuous culvert carrying Or 38 (hwy 045) over Koepke Slough in Douglas County, Oregon. It was built in 1933, so it is 92 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 3,998 vehicles a day, roughly 27% of them trucks, projected to reach 4,100 by 2042. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 22.4 mi (36 km).

Location

Open in Google Maps
CarriesOr 38 (hwy 045)
CrossesKoepke Slough
Location04.1 MI E HWY 009 JCT
RouteState Highway 38
CountyDouglas County
StateOregon
Coordinates43.6963, -124.0309
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,998 (2022)
Projected traffic4,100 by 2042
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed22.4 mi (36 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 38 (hwy 045) over Koepke Slough built?

It was built in 1933, making it 92 years old in 2025.

What condition is Or 38 (hwy 045) over Koepke Slough 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 November 2024.

How much traffic does Or 38 (hwy 045) over Koepke Slough carry?

About 3,998 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is Or 38 (hwy 045) over Koepke Slough?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns Or 38 (hwy 045) over Koepke Slough?

It is owned by the State Highway Agency.