US Bridges

Upper Tub Springs over Antelope Creek

Fair

Wasco County, Oregon · 0.1 MI S of HWY 293 · Structure no. 65C57 308 00008

Built
1940
85 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
31 ft
2 main spans
Daily traffic
31
2020 count
Owner
County
County Highway Agency

About this bridge

Upper Tub Springs over Antelope Creek is a steel continuous stringer/multi-beam or girder carrying Upper Tub Springs over Antelope Creek in Wasco County, Oregon. It was built in 1940, so it is 85 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 31 vehicles a day, roughly 5% of them trucks, projected to reach 36 by 2025. The structure is 31 ft (9.4 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUpper Tub Springs
CrossesAntelope Creek
Location0.1 MI S of HWY 293
RouteCounty Highway 0
CountyWasco County
StateOregon
Coordinates44.8988, -120.74274
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 inspectionNovember 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating23.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckWood or timber
Main spans2
Design loadH 15
Structure length31 ft (9.4 m)
Longest span16 ft (4.9 m)
Deck width22 ft (6.8 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31 (2020)
Projected traffic36 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Upper Tub Springs over Antelope Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Upper Tub Springs over Antelope Creek 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 November 2024.

How much traffic does Upper Tub Springs over Antelope Creek carry?

About 31 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Upper Tub Springs over Antelope Creek?

The structure is 31 ft (9.4 m) long with a longest span of 16 ft (4.9 m) and a deck 22 ft wide.

Who owns Upper Tub Springs over Antelope Creek?

It is owned by the County Highway Agency.