US Bridges

River Bar Road over Barber Creek Wash

Fair

Humboldt County, California · 0.6 MI South of RTE 36 · Structure no. 04C0219

Built
1970
55 years old, rebuilt 2006
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
28 ft
2 main spans
Daily traffic
351
2014 count
Owner
County
County Highway Agency

About this bridge

River Bar Road over Barber Creek Wash is a wood or timber stringer/multi-beam or girder carrying River Bar Road over Barber Creek Wash in Humboldt County, California. It was built in 1970 and reconstructed in 2006, so it is 55 years old, older 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 351 vehicles a day, roughly 40% of them trucks, projected to reach 550 by 2041. The structure is 28 ft (8.5 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesRiver Bar Road
CrossesBarber Creek Wash
Location0.6 MI South of RTE 36
RouteCounty Highway 0
CountyHumboldt County
StateCalifornia
Coordinates40.53816, -124.11165
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20 + Mod
Structure length28 ft (8.5 m)
Longest span15 ft (4.5 m)
Deck width17 ft (5.2 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2014)
Projected traffic550 by 2041
Trucks40%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 River Bar Road over Barber Creek Wash built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2006.

What condition is River Bar Road over Barber Creek Wash 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 August 2024.

How much traffic does River Bar Road over Barber Creek Wash carry?

About 351 vehicles per day (2014 count), of which roughly 40% are trucks.

How long is River Bar Road over Barber Creek Wash?

The structure is 28 ft (8.5 m) long with a longest span of 15 ft (4.5 m) and a deck 17 ft wide.

Who owns River Bar Road over Barber Creek Wash?

It is owned by the County Highway Agency.