US Bridges

HWY 293 over Antelope Creek

Good

Wasco County, Oregon · 031 MI S HWY 4 JCT · Structure no. 09452 293 00310

Built
1966
59 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
239
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 293 over Antelope Creek is a concrete continuous slab carrying HWY 293 over Antelope Creek in Wasco County, Oregon. It was built in 1966, so it is 59 years old, older 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 239 vehicles a day, roughly 4% of them trucks, projected to reach 290 by 2042. The structure is 90 ft (27.4 m) long and 32 ft wide. If it were closed, the detour would be 17.4 mi (28 km).

CarriesHWY 293
CrossesAntelope Creek
Location031 MI S HWY 4 JCT
RouteState Highway 293
StateOregon
Coordinates44.8452, -120.89842
Functional classRural Major 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span36 ft (11 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic239 (2022)
Projected traffic290 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed17.4 mi (28 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 HWY 293 over Antelope Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is HWY 293 over Antelope Creek 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 January 2025.

How much traffic does HWY 293 over Antelope Creek carry?

About 239 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is HWY 293 over Antelope Creek?

The structure is 90 ft (27.4 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.

Who owns HWY 293 over Antelope Creek?

It is owned by the State Highway Agency.