US Bridges

County Road 12 over Interstate 5

Fair

Yolo County, California · 03-YOL-005-R18.97 · Structure no. 22 0153

Built
1970
55 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
252 ft
2 main spans
Daily traffic
3,000
2016 count
Owner
State
State Highway Agency

About this bridge

County Road 12 over Interstate 5 is a prestressed concrete continuous box beam or girders - multiple carrying County Road 12 over Interstate 5 in Yolo County, California. It was built in 1970, so it is 55 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 3,000 vehicles a day, roughly 15% of them trucks, projected to reach 5,101 by 2042. The structure is 252 ft (76.8 m) long and 34 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesCounty Road 12
CrossesInterstate 5
Location03-YOL-005-R18.97
RouteCounty Highway 0
CountyYolo County
StateCalifornia
Coordinates38.80888, -121.89627
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span125 ft (38.2 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2016)
Projected traffic5,101 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road 12 over Interstate 5 built?

It was built in 1970, making it 55 years old in 2025.

What condition is County Road 12 over Interstate 5 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 March 2024.

How much traffic does County Road 12 over Interstate 5 carry?

About 3,000 vehicles per day (2016 count), of which roughly 15% are trucks.

How long is County Road 12 over Interstate 5?

The structure is 252 ft (76.8 m) long with a longest span of 125 ft (38.2 m) and a deck 34 ft wide.

Who owns County Road 12 over Interstate 5?

It is owned by the State Highway Agency.