US Bridges

Ruh Red LN over Silvies River

Good

Harney County, Oregon · 3 MI W. Lawen · Structure no. 17374 C31625A80

Built
1995
30 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
112
2020 count
Owner
County
County Highway Agency

About this bridge

Ruh Red LN over Silvies River is a prestressed concrete slab carrying Ruh Red LN over Silvies River in Harney County, Oregon. It was built in 1995, so it is 30 years old, younger 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 112 vehicles a day, roughly 5% of them trucks, projected to reach 127 by 2025. The structure is 72 ft (21.9 m) long and 28 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesRuh Red LN
CrossesSilvies River
Location3 MI W. Lawen
RouteCounty Highway C3160
StateOregon
Coordinates43.38242, -118.83555
Functional classRural Minor 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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length72 ft (21.9 m)
Longest span71 ft (21.6 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2020)
Projected traffic127 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Ruh Red LN over Silvies River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Ruh Red LN over Silvies River 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 September 2024.

How much traffic does Ruh Red LN over Silvies River carry?

About 112 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Ruh Red LN over Silvies River?

The structure is 72 ft (21.9 m) long with a longest span of 71 ft (21.6 m) and a deck 28 ft wide.

Who owns Ruh Red LN over Silvies River?

It is owned by the County Highway Agency.