US Bridges

Sprague River RD over Sprague River

Good

Klamath County, Oregon · 024.05 MI from Hwy. 97 · Structure no. 20382 312002405

Built
2007
18 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
230 ft
2 main spans
Daily traffic
1,238
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 2007, so it is 18 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 1,238 vehicles a day, roughly 10% of them trucks, projected to reach 1,358 by 2025. The structure is 230 ft (70.1 m) long and 35 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

CarriesSprague River RD
CrossesSprague River
Location024.05 MI from Hwy. 97
RouteCounty Highway 0B312
StateOregon
Coordinates42.4629, -121.50585
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.
Superstructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable 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 rating55 US tons
Inventory rating42.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length230 ft (70.1 m)
Longest span115 ft (35.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,238 (2020)
Projected traffic1,358 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.9 mi (53 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 2007, making it 18 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 1,238 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Sprague River RD over Sprague River?

The structure is 230 ft (70.1 m) long with a longest span of 115 ft (35.1 m) and a deck 35 ft wide.

Who owns Sprague River RD over Sprague River?

It is owned by the County Highway Agency.