US Bridges

Sprague River RD over Sprague River

Good

Klamath County, Oregon · 5.79 MI from JCT FAS 164 · Structure no. 20380 858 00579

Built
2008
17 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
176 ft
2 main spans
Daily traffic
770
2020 count
Owner
County
County Highway Agency

About this bridge

Sprague River RD over Sprague River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sprague River RD over Sprague River in Klamath County, Oregon. It was built in 2008, so it is 17 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 770 vehicles a day, roughly 10% of them trucks, projected to reach 780 by 2025. The structure is 176 ft (53.6 m) long and 35 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesSprague River RD
CrossesSprague River
Location5.79 MI from JCT FAS 164
RouteCounty Highway 0B312
StateOregon
Coordinates42.60141, -121.77824
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating52.1 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length176 ft (53.6 m)
Longest span88 ft (26.8 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic770 (2020)
Projected traffic780 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 Sprague River RD over Sprague River built?

It was built in 2008, making it 17 years old in 2025.

What condition is Sprague River RD over Sprague 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 July 2024.

How much traffic does Sprague River RD over Sprague River carry?

About 770 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Sprague River RD over Sprague River?

The structure is 176 ft (53.6 m) long with a longest span of 88 ft (26.8 m) and a deck 35 ft wide.

Who owns Sprague River RD over Sprague River?

It is owned by the County Highway Agency.