US Bridges

Beulah Road C510 over N Fork Malheur River

Good

Malheur County, Oregon · 01 M N Inter HWY 20 · Structure no. 00943A051001710

Built
1986
39 years old, rebuilt 1994
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
152
2020 count
Owner
County
County Highway Agency

About this bridge

Beulah Road C510 over N Fork Malheur River is a prestressed concrete slab carrying Beulah Road C510 over N Fork Malheur River in Malheur County, Oregon. It was built in 1986 and reconstructed in 1994, so it is 39 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 152 vehicles a day, roughly 20% of them trucks, projected to reach 182 by 2025. The structure is 58 ft (17.7 m) long and 28 ft wide. If it were closed, the detour would be 60.9 mi (98 km).

CarriesBeulah Road C510
CrossesN Fork Malheur River
Location01 M N Inter HWY 20
RouteCounty Highway 0B498
StateOregon
Coordinates43.75502, -118.08379
Functional classRural Minor 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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment6: Equal to present minimum criteria
Operating rating88.6 US tons
Inventory rating68.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span56 ft (17.1 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic152 (2020)
Projected traffic182 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.9 mi (98 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 Beulah Road C510 over N Fork Malheur River built?

It was built in 1986, making it 39 years old in 2025. It was reconstructed in 1994.

What condition is Beulah Road C510 over N Fork Malheur River 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 Beulah Road C510 over N Fork Malheur River carry?

About 152 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Beulah Road C510 over N Fork Malheur River?

The structure is 58 ft (17.7 m) long with a longest span of 56 ft (17.1 m) and a deck 28 ft wide.

Who owns Beulah Road C510 over N Fork Malheur River?

It is owned by the County Highway Agency.