US Bridges

Yolo-Colusa Co. RD over Tehama-Colusa Canal

Fair

Yolo County, California · 0.7 MI W/O I-5 · Structure no. 22C0164

Built
1978
47 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
625
2015 count
Owner
County
County Highway Agency

About this bridge

Yolo-Colusa Co. RD over Tehama-Colusa Canal is a prestressed concrete stringer/multi-beam or girder carrying Yolo-Colusa Co. RD over Tehama-Colusa Canal in Yolo County, California. It was built in 1978, so it is 47 years old, younger 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 625 vehicles a day, roughly 25% of them trucks, projected to reach 1,029 by 2047. The structure is 72 ft (21.9 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesYolo-Colusa Co. RD
CrossesTehama-Colusa Canal
Location0.7 MI W/O I-5
RouteCounty Highway 0
Coordinates38.92588, -122.01794
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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 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 rating52.1 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span71 ft (21.6 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic625 (2015)
Projected traffic1,029 by 2047
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Yolo-Colusa Co. RD over Tehama-Colusa Canal built?

It was built in 1978, making it 47 years old in 2025.

What condition is Yolo-Colusa Co. RD over Tehama-Colusa 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 January 2025.

How much traffic does Yolo-Colusa Co. RD over Tehama-Colusa Canal carry?

About 625 vehicles per day (2015 count), of which roughly 25% are trucks.

How long is Yolo-Colusa Co. RD over Tehama-Colusa Canal?

The structure is 72 ft (21.9 m) long with a longest span of 71 ft (21.6 m) and a deck 35 ft wide.

Who owns Yolo-Colusa Co. RD over Tehama-Colusa Canal?

It is owned by the County Highway Agency.