US Bridges

Cottonwood Road over N Fork Cottonwood Creek

FairPosted for load

Umatilla County, Oregon · 0.4 MI S Ore State Line · Structure no. 59C503581 00035

Built
1963
62 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
82
2020 count
Owner
County
County Highway Agency

About this bridge

Cottonwood Road over N Fork Cottonwood Creek is a steel stringer/multi-beam or girder carrying Cottonwood Road over N Fork Cottonwood Creek in Umatilla County, Oregon. It was built in 1963, so it is 62 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. Its operating status is: posted for load restriction.

It carries about 82 vehicles a day, roughly 20% of them trucks, projected to reach 95 by 2025. The structure is 24 ft (7.3 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCottonwood Road
CrossesN Fork Cottonwood Creek
Location0.4 MI S Ore State Line
RouteCounty Highway 0
StateOregon
Coordinates45.99561, -118.23659
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment6: Equal to present minimum criteria
Operating rating21.4 US tons
Inventory rating16.4 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2020)
Projected traffic95 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 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 Cottonwood Road over N Fork Cottonwood Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Cottonwood Road over N Fork Cottonwood 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 2023.

How much traffic does Cottonwood Road over N Fork Cottonwood Creek carry?

About 82 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Cottonwood Road over N Fork Cottonwood Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 25 ft wide.

Who owns Cottonwood Road over N Fork Cottonwood Creek?

It is owned by the County Highway Agency.