US Bridges

Clarks Canyon Road over Willow Creek EB

PoorPosted for load

Morrow County, Oregon · 0.50 MI W of HWY 74 · Structure no. 49C09 096600000

Built
1983
42 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
81
2020 count
Owner
County
County Highway Agency

About this bridge

Clarks Canyon Road over Willow Creek EB is a steel stringer/multi-beam or girder carrying Clarks Canyon Road over Willow Creek EB in Morrow County, Oregon. It was built in 1983, so it is 42 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 81 vehicles a day, roughly 10% of them trucks, projected to reach 96 by 2025. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

CarriesClarks Canyon Road
CrossesWillow Creek EB
Location0.50 MI W of HWY 74
RouteCounty Highway 0
StateOregon
Coordinates45.44713, -119.69896
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
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 rating14.7 US tons
Inventory rating11.5 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic81 (2020)
Projected traffic96 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$266,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Clarks Canyon Road over Willow Creek EB built?

It was built in 1983, making it 42 years old in 2025.

What condition is Clarks Canyon Road over Willow Creek EB in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Clarks Canyon Road over Willow Creek EB carry?

About 81 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Clarks Canyon Road over Willow Creek EB?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 24 ft wide.

Who owns Clarks Canyon Road over Willow Creek EB?

It is owned by the County Highway Agency.