US Bridges

Evans C-1090 over Willow CR

Fair

Malheur County, Oregon · 008MI N E Inter HWY26 · Structure no. 45C107109000036

Built
1983
42 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
122
2020 count
Owner
County
County Highway Agency

About this bridge

Evans C-1090 over Willow CR is a steel stringer/multi-beam or girder carrying Evans C-1090 over Willow CR in Malheur 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 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: open, posting recommended but not legally implemented.

It carries about 122 vehicles a day, roughly 20% of them trucks, projected to reach 141 by 2025. The structure is 32 ft (9.8 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesEvans C-1090
CrossesWillow CR
Location008MI N E Inter HWY26
RouteCounty Highway C1090
StateOregon
Coordinates44.09795, -117.31803
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, posting recommended but not legally implemented
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating9.6 US tons
Inventory rating7.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span27 ft (8.2 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122 (2020)
Projected traffic141 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Evans C-1090 over Willow CR built?

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

What condition is Evans C-1090 over Willow CR 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 September 2024.

How much traffic does Evans C-1090 over Willow CR carry?

About 122 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Evans C-1090 over Willow CR?

The structure is 32 ft (9.8 m) long with a longest span of 27 ft (8.2 m) and a deck 24 ft wide.

Who owns Evans C-1090 over Willow CR?

It is owned by the County Highway Agency.