US Bridges

Airport Rd-Johnson over Malheur River

Fair

Malheur County, Oregon · 011 M S Inter Sandhollow · Structure no. 16375 110000352

Built
1979
46 years old
Condition
Fair
inspected October 2023
Type
Slab
Prestressed Concrete
Length
141 ft
2 main spans
Daily traffic
249
2020 count
Owner
County
County Highway Agency

About this bridge

Airport Rd-Johnson over Malheur River is a prestressed concrete slab carrying Airport Rd-Johnson over Malheur River in Malheur County, Oregon. It was built in 1979, so it is 46 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 249 vehicles a day, roughly 20% of them trucks, projected to reach 289 by 2025. The structure is 141 ft (43 m) long and 28 ft wide. If it were closed, the detour would be 9.3 mi (15 km).

Location

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CarriesAirport Rd-Johnson
CrossesMalheur River
Location011 M S Inter Sandhollow
RouteCounty Highway 0B495
CountyMalheur County
StateOregon
Coordinates43.9422, -117.2657
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.3 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length141 ft (43 m)
Longest span70 ft (21.3 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic249 (2020)
Projected traffic289 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.3 mi (15 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 Airport Rd-Johnson over Malheur River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Airport Rd-Johnson 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 October 2023.

How much traffic does Airport Rd-Johnson over Malheur River carry?

About 249 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Airport Rd-Johnson over Malheur River?

The structure is 141 ft (43 m) long with a longest span of 70 ft (21.3 m) and a deck 28 ft wide.

Who owns Airport Rd-Johnson over Malheur River?

It is owned by the County Highway Agency.