US Bridges

US 30 (hwy 066) over North Powder River

Fair

Union County, Oregon · Union-Baker Co. Line · Structure no. 07293 066 03286

Built
1952
73 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
872
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 (hwy 066) over North Powder River is a concrete continuous stringer/multi-beam or girder carrying US 30 (hwy 066) over North Powder River in Union County, Oregon. It was built in 1952, so it is 73 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.

It carries about 872 vehicles a day, roughly 25% of them trucks, projected to reach 880 by 2042. The structure is 81 ft (24.7 m) long and 50 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesUS 30 (hwy 066)
CrossesNorth Powder River
LocationUnion-Baker Co. Line
RouteU.S. Route 30
CountyUnion County
StateOregon
Coordinates45.01846, -117.92281
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span30 ft (9.1 m)
Deck width50 ft (15.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic872 (2022)
Projected traffic880 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 30 (hwy 066) over North Powder River built?

It was built in 1952, making it 73 years old in 2025.

What condition is US 30 (hwy 066) over North Powder 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 June 2023.

How much traffic does US 30 (hwy 066) over North Powder River carry?

About 872 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is US 30 (hwy 066) over North Powder River?

The structure is 81 ft (24.7 m) long with a longest span of 30 ft (9.1 m) and a deck 50 ft wide.

Who owns US 30 (hwy 066) over North Powder River?

It is owned by the State Highway Agency.