US Bridges

Auburn Ave over Powder River

Fair

Baker County, Oregon · City of Baker · Structure no. 04T02 000 00112

Built
1958
67 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
53 ft
2 main spans
Daily traffic
2,221
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Auburn Ave over Powder River is a concrete tee beam carrying Auburn Ave over Powder River in Baker County, Oregon. It was built in 1958, so it is 67 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 5 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 2,221 vehicles a day, roughly 5% of them trucks, projected to reach 2,626 by 2025. The structure is 53 ft (16.2 m) long and 47 ft wide.

Location

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CarriesAuburn Ave
CrossesPowder River
LocationCity of Baker
RouteCity Street 4860
CountyBaker County
StateOregon
Coordinates44.77452, -117.82767
Functional classUrban Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating51.5 US tons
Inventory rating30.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span26 ft (7.9 m)
Deck width47 ft (14.4 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,221 (2020)
Projected traffic2,626 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Auburn Ave over Powder River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Auburn Ave over 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 Auburn Ave over Powder River carry?

About 2,221 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Auburn Ave over Powder River?

The structure is 53 ft (16.2 m) long with a longest span of 26 ft (7.9 m) and a deck 47 ft wide.

Who owns Auburn Ave over Powder River?

It is owned by the City or Municipal Highway Agency.