US Bridges

East Hettenshaw RD over Van Duzen River

Fair

Trinity County, California · 100 South Ruth-Zenia RD · Structure no. 05C0191

Built
1950
75 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
10
2012 count
Owner
County
County Highway Agency

About this bridge

East Hettenshaw RD over Van Duzen River is a steel stringer/multi-beam or girder carrying East Hettenshaw RD over Van Duzen River in Trinity County, California. It was built in 1950, so it is 75 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 10 vehicles a day, projected to reach 11 by 2042. The structure is 29 ft (8.8 m) long and 13 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesEast Hettenshaw RD
CrossesVan Duzen River
Location100 South Ruth-Zenia RD
RouteCounty Highway 0
CountyTrinity County
StateCalifornia
Coordinates40.27542, -123.40143
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span27 ft (8.3 m)
Deck width13 ft (4.1 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2012)
Projected traffic11 by 2042
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 East Hettenshaw RD over Van Duzen River built?

It was built in 1950, making it 75 years old in 2025.

What condition is East Hettenshaw RD over Van Duzen River 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 June 2023.

How much traffic does East Hettenshaw RD over Van Duzen River carry?

About 10 vehicles per day (2012 count).

How long is East Hettenshaw RD over Van Duzen River?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.3 m) and a deck 13 ft wide.

Who owns East Hettenshaw RD over Van Duzen River?

It is owned by the County Highway Agency.