US Bridges

Klamath River Road over Klamath River

Good

Siskiyou County, California · South of SH 96 · Structure no. 02C0241

Built
2014
11 years old
Condition
Good
inspected July 2024
Type
Truss - Thru
Steel
Length
206 ft
1 main span
Daily traffic
200
2011 count
Owner
County
County Highway Agency

About this bridge

Klamath River Road over Klamath River is a steel truss - thru carrying Klamath River Road over Klamath River in Siskiyou County, California. It was built in 2014, so it is 11 years old, younger than the California average of 54.8 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 522 by 2046. The structure is 206 ft (62.7 m) long and 26 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesKlamath River Road
CrossesKlamath River
LocationSouth of SH 96
RouteCounty Highway 14000
Coordinates41.83392, -122.62067
Functional classUrban 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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadHL 93
Structure length206 ft (62.7 m)
Longest span171 ft (52 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2011)
Projected traffic522 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Klamath River Road over Klamath River built?

It was built in 2014, making it 11 years old in 2025.

What condition is Klamath River Road over Klamath 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 Klamath River Road over Klamath River carry?

About 200 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Klamath River Road over Klamath River?

The structure is 206 ft (62.7 m) long with a longest span of 171 ft (52 m) and a deck 26 ft wide.

Who owns Klamath River Road over Klamath River?

It is owned by the County Highway Agency.