US Bridges

Foley Drive over Silvies River

Fair

Harney County, Oregon · 015 MI US 20/395 · Structure no. 25A26 C12100150

Built
1958
67 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
125 ft
5 main spans
Daily traffic
217
2020 count
Owner
County
County Highway Agency

About this bridge

Foley Drive over Silvies River is a concrete continuous stringer/multi-beam or girder carrying Foley Drive over Silvies River in Harney 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 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 217 vehicles a day, roughly 20% of them trucks, projected to reach 252 by 2025. The structure is 125 ft (38.1 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFoley Drive
CrossesSilvies River
Location015 MI US 20/395
RouteCounty Highway C0121
CountyHarney County
StateOregon
Coordinates43.6136, -119.05923
Functional classRural Minor 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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to 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 alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span25 ft (7.6 m)
Deck width29 ft (8.8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic217 (2020)
Projected traffic252 by 2025
Trucks20%
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 Foley Drive over Silvies River built?

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

What condition is Foley Drive over Silvies 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 September 2024.

How much traffic does Foley Drive over Silvies River carry?

About 217 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Foley Drive over Silvies River?

The structure is 125 ft (38.1 m) long with a longest span of 25 ft (7.6 m) and a deck 29 ft wide.

Who owns Foley Drive over Silvies River?

It is owned by the County Highway Agency.