US Bridges

South Fork Road over Pelletreau Creek

Fair

Trinity County, California · 2.3 MI N Hyampom RD · Structure no. 05C0137

Built
1967
58 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
200 ft
4 main spans
Daily traffic
160
2000 count
Owner
County
County Highway Agency

About this bridge

South Fork Road over Pelletreau Creek is a concrete continuous box beam or girders - multiple carrying South Fork Road over Pelletreau Creek in Trinity County, California. It was built in 1967, so it is 58 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 160 vehicles a day, roughly 4% of them trucks, projected to reach 212 by 2042. The structure is 200 ft (61 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSouth Fork Road
CrossesPelletreau Creek
Location2.3 MI N Hyampom RD
RouteCounty Highway 0
Coordinates40.61944, -123.4751
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating20.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length200 ft (61 m)
Longest span85 ft (25.9 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2000)
Projected traffic212 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-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 South Fork Road over Pelletreau Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is South Fork Road over Pelletreau 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 May 2024.

How much traffic does South Fork Road over Pelletreau Creek carry?

About 160 vehicles per day (2000 count), of which roughly 4% are trucks.

How long is South Fork Road over Pelletreau Creek?

The structure is 200 ft (61 m) long with a longest span of 85 ft (25.9 m) and a deck 29 ft wide.

Who owns South Fork Road over Pelletreau Creek?

It is owned by the County Highway Agency.