US Bridges

Or 138 (hwy 138) over Rock Creek

Fair

Douglas County, Oregon · 22.3 MI E HWY 234 JCT · Structure no. 07904 073 02226

Built
1954
71 years old, rebuilt 1978
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
200 ft
5 main spans
Daily traffic
1,555
2022 count
Owner
State
State Highway Agency

About this bridge

Or 138 (hwy 138) over Rock Creek is a concrete continuous tee beam carrying Or 138 (hwy 138) over Rock Creek in Douglas County, Oregon. It was built in 1954 and reconstructed in 1978, so it is 71 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 1,555 vehicles a day, roughly 20% of them trucks, projected to reach 1,700 by 2042. The structure is 200 ft (61 m) long and 32 ft wide. If it were closed, the detour would be 80.8 mi (130 km).

Location

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CarriesOr 138 (hwy 138)
CrossesRock Creek
Location22.3 MI E HWY 234 JCT
RouteU.S. Route 138
CountyDouglas County
StateOregon
Coordinates43.33326, -123.00316
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating23.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length200 ft (61 m)
Longest span70 ft (21.3 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,555 (2022)
Projected traffic1,700 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed80.8 mi (130 km)
TollOn a free road
National Highway SystemNo

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 138 (hwy 138) over Rock Creek built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1978.

What condition is Or 138 (hwy 138) over Rock 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 July 2024.

How much traffic does Or 138 (hwy 138) over Rock Creek carry?

About 1,555 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is Or 138 (hwy 138) over Rock Creek?

The structure is 200 ft (61 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.

Who owns Or 138 (hwy 138) over Rock Creek?

It is owned by the State Highway Agency.