US Bridges

Road 34 over Princeton Codora Canal

Fair

Glenn County, California · West of Road X · Structure no. 11C0149

Built
1935
90 years old, rebuilt 1960
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
95
2011 count
Owner
County
County Highway Agency

About this bridge

Road 34 over Princeton Codora Canal is a concrete continuous tee beam carrying Road 34 over Princeton Codora Canal in Glenn County, California. It was built in 1935 and reconstructed in 1960, so it is 90 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 95 vehicles a day, roughly 20% of them trucks, projected to reach 176 by 2044. The structure is 32 ft (9.8 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRoad 34
CrossesPrinceton Codora Canal
LocationWest of Road X
RouteCounty Highway 0
Coordinates39.61607, -122.02672
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.
Superstructure7 GoodSome minor problems.
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 inspectionFebruary 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span16 ft (4.9 m)
Deck width30 ft (9 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (2011)
Projected traffic176 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Road 34 over Princeton Codora Canal built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1960.

What condition is Road 34 over Princeton Codora Canal 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 February 2024.

How much traffic does Road 34 over Princeton Codora Canal carry?

About 95 vehicles per day (2011 count), of which roughly 20% are trucks.

How long is Road 34 over Princeton Codora Canal?

The structure is 32 ft (9.8 m) long with a longest span of 16 ft (4.9 m) and a deck 30 ft wide.

Who owns Road 34 over Princeton Codora Canal?

It is owned by the County Highway Agency.