US Bridges

Warm Spring Res RD over Malheur River

FairPosted for load

Malheur County, Oregon · 012 W FASB484 (C-589) · Structure no. 45C405058900274

Built
1942
83 years old, rebuilt 1995
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel
Length
125 ft
1 main span
Daily traffic
77
2020 count
Owner
County
County Highway Agency

About this bridge

Warm Spring Res RD over Malheur River is a steel truss - thru carrying Warm Spring Res RD over Malheur River in Malheur County, Oregon. It was built in 1942 and reconstructed in 1995, so it is 83 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 other load-capacity restriction.

It carries about 77 vehicles a day, roughly 10% of them trucks, projected to reach 92 by 2025. The structure is 125 ft (38.1 m) long and 16 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesWarm Spring Res RD
CrossesMalheur River
Location012 W FASB484 (C-589)
RouteCounty Highway C0589
CountyMalheur County
StateOregon
Coordinates43.56176, -118.19598
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
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 rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 10
Structure length125 ft (38.1 m)
Longest span124 ft (37.8 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic77 (2020)
Projected traffic92 by 2025
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Warm Spring Res RD over Malheur River built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1995.

What condition is Warm Spring Res RD over Malheur River 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 2023.

How much traffic does Warm Spring Res RD over Malheur River carry?

About 77 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Warm Spring Res RD over Malheur River?

The structure is 125 ft (38.1 m) long with a longest span of 124 ft (37.8 m) and a deck 16 ft wide.

Who owns Warm Spring Res RD over Malheur River?

It is owned by the County Highway Agency.