US Bridges

B-Bar-K Road over Browns Creek

Fair

Trinity County, California · 2.9 MI NW of SR 3 · Structure no. 05C0112

Built
1949
76 years old, rebuilt 1990
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
2 main spans
Daily traffic
20
2010 count
Owner
County
County Highway Agency

About this bridge

B-Bar-K Road over Browns Creek is a steel stringer/multi-beam or girder carrying B-Bar-K Road over Browns Creek in Trinity County, California. It was built in 1949 and reconstructed in 1990, so it is 76 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 5 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 20 vehicles a day, roughly 2% of them trucks, projected to reach 21 by 2042. The structure is 73 ft (22.3 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesB-Bar-K Road
CrossesBrowns Creek
Location2.9 MI NW of SR 3
RouteCounty Highway 0
CountyTrinity County
StateCalifornia
Coordinates40.6505, -122.98537
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating41.4 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans2
Design loadUnknown
Structure length73 ft (22.3 m)
Longest span49 ft (14.9 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2010)
Projected traffic21 by 2042
Trucks2%
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 B-Bar-K Road over Browns Creek built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1990.

What condition is B-Bar-K Road over Browns 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 August 2023.

How much traffic does B-Bar-K Road over Browns Creek carry?

About 20 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is B-Bar-K Road over Browns Creek?

The structure is 73 ft (22.3 m) long with a longest span of 49 ft (14.9 m) and a deck 16 ft wide.

Who owns B-Bar-K Road over Browns Creek?

It is owned by the County Highway Agency.