US Bridges

South Ave over Tehama-Colusa Canal

Good

Tehama County, California · 3.2 MI E/O Road 99W · Structure no. 08C0165

Built
1965
60 years old
Condition
Good
inspected April 2021
Type
Slab
Concrete
Length
84 ft
2 main spans
Daily traffic
3,400
2010 count
Owner
County
County Highway Agency

About this bridge

South Ave over Tehama-Colusa Canal is a concrete slab carrying South Ave over Tehama-Colusa Canal in Tehama County, California. It was built in 1965, so it is 60 years old, older 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 3,400 vehicles a day, roughly 9% of them trucks, projected to reach 8,578 by 2043. The structure is 84 ft (25.6 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSouth Ave
CrossesTehama-Colusa Canal
Location3.2 MI E/O Road 99W
RouteCounty Highway 0
CountyTehama County
StateCalifornia
Coordinates39.90596, -122.14103
Functional classRural Major 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 inspectionApril 2021
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 alignment7: Better than present minimum criteria
Operating rating86.4 US tons
Inventory rating51.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length84 ft (25.6 m)
Longest span41 ft (12.5 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2010)
Projected traffic8,578 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Ave over Tehama-Colusa Canal built?

It was built in 1965, making it 60 years old in 2025.

What condition is South Ave over Tehama-Colusa Canal 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 April 2021.

How much traffic does South Ave over Tehama-Colusa Canal carry?

About 3,400 vehicles per day (2010 count), of which roughly 9% are trucks.

How long is South Ave over Tehama-Colusa Canal?

The structure is 84 ft (25.6 m) long with a longest span of 41 ft (12.5 m) and a deck 44 ft wide.

Who owns South Ave over Tehama-Colusa Canal?

It is owned by the County Highway Agency.