US Bridges

Willow CR RD over Willow CR (twinbridges)

Good

Malheur County, Oregon · 8.67 NE HWY 26 · Structure no. 016515050200867

Built
1982
43 years old
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
57
2020 count
Owner
County
County Highway Agency

About this bridge

Willow CR RD over Willow CR (twinbridges) is a prestressed concrete slab carrying Willow CR RD over Willow CR (twinbridges) in Malheur County, Oregon. It was built in 1982, so it is 43 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 57 vehicles a day, roughly 20% of them trucks, projected to reach 67 by 2025. The structure is 68 ft (20.7 m) long and 24 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesWillow CR RD
CrossesWillow CR (twinbridges)
Location8.67 NE HWY 26
RouteCounty Highway 0B500
StateOregon
Coordinates44.36861, -117.81786
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating34.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span66 ft (20.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57 (2020)
Projected traffic67 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 Willow CR RD over Willow CR (twinbridges) built?

It was built in 1982, making it 43 years old in 2025.

What condition is Willow CR RD over Willow CR (twinbridges) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Willow CR RD over Willow CR (twinbridges) carry?

About 57 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Willow CR RD over Willow CR (twinbridges)?

The structure is 68 ft (20.7 m) long with a longest span of 66 ft (20.1 m) and a deck 24 ft wide.

Who owns Willow CR RD over Willow CR (twinbridges)?

It is owned by the County Highway Agency.