US Bridges

Elkhead Road #7 over Elk Creek

Fair

Douglas County, Oregon · 5.3 MI E of Yoncalla · Structure no. 19C062000700515

Built
1955
70 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
104 ft
3 main spans
Daily traffic
523
2020 count
Owner
County
County Highway Agency

About this bridge

Elkhead Road #7 over Elk Creek is a steel stringer/multi-beam or girder carrying Elkhead Road #7 over Elk Creek in Douglas County, Oregon. It was built in 1955, so it is 70 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 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 523 vehicles a day, roughly 10% of them trucks, projected to reach 593 by 2025. The structure is 104 ft (31.7 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesElkhead Road #7
CrossesElk Creek
Location5.3 MI E of Yoncalla
RouteCounty Highway C0007
CountyDouglas County
StateOregon
Coordinates43.59586, -123.19363
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.8 US tons
Inventory rating29.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length104 ft (31.7 m)
Longest span39 ft (11.9 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic523 (2020)
Projected traffic593 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Elkhead Road #7 over Elk Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Elkhead Road #7 over Elk 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 October 2024.

How much traffic does Elkhead Road #7 over Elk Creek carry?

About 523 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Elkhead Road #7 over Elk Creek?

The structure is 104 ft (31.7 m) long with a longest span of 39 ft (11.9 m) and a deck 24 ft wide.

Who owns Elkhead Road #7 over Elk Creek?

It is owned by the County Highway Agency.