US Bridges

County RD 1 over Elk Creek

Fair

Douglas County, Oregon · 3.4 MI SE of Drew Po · Structure no. 19C480 1 3499

Built
1935
90 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
150 ft
3 main spans
Daily traffic
579
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 1 over Elk Creek is a steel continuous stringer/multi-beam or girder carrying County RD 1 over Elk Creek in Douglas County, Oregon. It was built in 1935, so it is 90 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 579 vehicles a day, roughly 15% of them trucks, projected to reach 654 by 2025. The structure is 150 ft (45.7 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty RD 1
CrossesElk Creek
Location3.4 MI SE of Drew Po
RouteCounty Highway 0A410
CountyDouglas County
StateOregon
Coordinates42.85005, -122.85704
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment8: Equal to present desirable criteria
Operating rating25.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length150 ft (45.7 m)
Longest span65 ft (19.8 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic579 (2020)
Projected traffic654 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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 1 over Elk Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is County RD 1 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 June 2023.

How much traffic does County RD 1 over Elk Creek carry?

About 579 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is County RD 1 over Elk Creek?

The structure is 150 ft (45.7 m) long with a longest span of 65 ft (19.8 m) and a deck 32 ft wide.

Who owns County RD 1 over Elk Creek?

It is owned by the County Highway Agency.