US Bridges

County RD 75 over Sutherlin Creek

Fair

Douglas County, Oregon · 6.0 MI E of Sutherlin · Structure no. 19C114007500200

Built
1979
46 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
81 ft
2 main spans
Daily traffic
215
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 75 over Sutherlin Creek is a steel stringer/multi-beam or girder carrying County RD 75 over Sutherlin Creek in Douglas County, Oregon. It was built in 1979, so it is 46 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 5 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 215 vehicles a day, roughly 3% of them trucks, projected to reach 245 by 2025. The structure is 81 ft (24.7 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCounty RD 75
CrossesSutherlin Creek
Location6.0 MI E of Sutherlin
RouteCounty Highway C0075
CountyDouglas County
StateOregon
Coordinates43.38729, -123.23434
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length81 ft (24.7 m)
Longest span49 ft (14.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic215 (2020)
Projected traffic245 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 75 over Sutherlin Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is County RD 75 over Sutherlin 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 75 over Sutherlin Creek carry?

About 215 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is County RD 75 over Sutherlin Creek?

The structure is 81 ft (24.7 m) long with a longest span of 49 ft (14.9 m) and a deck 26 ft wide.

Who owns County RD 75 over Sutherlin Creek?

It is owned by the County Highway Agency.