US Bridges

Klamath River Road over Vesa Creek

Fair

Siskiyou County, California · 7 MI NW Humbug CR RD · Structure no. 02C0235

Built
1974
51 years old
Condition
Fair
inspected July 2022
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
23
2011 count
Owner
County
County Highway Agency

About this bridge

Klamath River Road over Vesa Creek is a concrete continuous culvert carrying Klamath River Road over Vesa Creek in Siskiyou County, California. It was built in 1974, so it is 51 years old, younger than the California average of 54.8 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 23 vehicles a day, roughly 5% of them trucks, projected to reach 34 by 2040. The structure is 22 ft (6.7 m) long and 26 ft wide. If it were closed, the detour would be 46 mi (74 km).

Location

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CarriesKlamath River Road
CrossesVesa Creek
Location7 MI NW Humbug CR RD
RouteCounty Highway 0
CountySiskiyou County
StateCalifornia
Coordinates41.85531, -122.7612
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23 (2011)
Projected traffic34 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed46 mi (74 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 Vesa Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Klamath River Road over Vesa Creek 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 July 2022.

How much traffic does Klamath River Road over Vesa Creek carry?

About 23 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Klamath River Road over Vesa Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.2 m) and a deck 26 ft wide.

Who owns Klamath River Road over Vesa Creek?

It is owned by the County Highway Agency.