US Bridges

Warm Spring Res RD over Granite CR

Fair

Malheur County, Oregon · 022 S Riverside · Structure no. 45C404058702025

Built
1983
42 years old
Condition
Fair
inspected September 2023
Type
Channel Beam
Prestressed Concrete
Length
21 ft
1 main span
Daily traffic
96
2020 count
Owner
County
County Highway Agency

About this bridge

Warm Spring Res RD over Granite CR is a prestressed concrete channel beam carrying Warm Spring Res RD over Granite 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.

It carries about 96 vehicles a day, roughly 10% of them trucks, projected to reach 116 by 2025. The structure is 21 ft (6.4 m) long and 24 ft wide. If it were closed, the detour would be 73.3 mi (118 km).

Location

Open in Google Maps
CarriesWarm Spring Res RD
CrossesGranite CR
Location022 S Riverside
RouteCounty Highway 0B484
CountyMalheur County
StateOregon
Coordinates43.51237, -118.16968
Functional classRural Major 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 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 evaluation6: Equal to 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 rating40 US tons
Inventory rating24 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span20 ft (6.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2020)
Projected traffic116 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed73.3 mi (118 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 Warm Spring Res RD over Granite CR built?

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

What condition is Warm Spring Res RD over Granite 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 2023.

How much traffic does Warm Spring Res RD over Granite CR carry?

About 96 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Warm Spring Res RD over Granite CR?

The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 24 ft wide.

Who owns Warm Spring Res RD over Granite CR?

It is owned by the County Highway Agency.