US Bridges

Ruth-Zenia Road over Van Duzen River

Good

Trinity County, California · 14.8 MI from SR 36 · Structure no. 05C0223

Built
2003
22 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
88
2010 count
Owner
County
County Highway Agency

About this bridge

Ruth-Zenia Road over Van Duzen River is a concrete continuous slab carrying Ruth-Zenia Road over Van Duzen River in Trinity County, California. It was built in 2003, so it is 22 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 88 vehicles a day, roughly 2% of them trucks, projected to reach 95 by 2042. The structure is 125 ft (38 m) long and 29 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesRuth-Zenia Road
CrossesVan Duzen River
Location14.8 MI from SR 36
RouteCounty Highway 0
Coordinates40.28944, -123.43552
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length125 ft (38 m)
Longest span41 ft (12.5 m)
Deck width29 ft (8.9 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88 (2010)
Projected traffic95 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 Ruth-Zenia Road over Van Duzen River built?

It was built in 2003, making it 22 years old in 2025.

What condition is Ruth-Zenia Road over Van Duzen River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Ruth-Zenia Road over Van Duzen River carry?

About 88 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is Ruth-Zenia Road over Van Duzen River?

The structure is 125 ft (38 m) long with a longest span of 41 ft (12.5 m) and a deck 29 ft wide.

Who owns Ruth-Zenia Road over Van Duzen River?

It is owned by the County Highway Agency.