US Bridges

County Road 4 over Interstate 5

Fair

Yolo County, California · 03-YOL-005-R26.65 · Structure no. 22 0133

Built
1968
57 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
224 ft
2 main spans
Daily traffic
3,000
2016 count
Owner
State
State Highway Agency

About this bridge

County Road 4 over Interstate 5 is a concrete continuous box beam or girders - multiple carrying County Road 4 over Interstate 5 in Yolo County, California. It was built in 1968, so it is 57 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 224 ft (68.3 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 4
CrossesInterstate 5
Location03-YOL-005-R26.65
RouteCounty Highway 0
CountyYolo County
StateCalifornia
Coordinates38.89618, -121.98131
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.8 US tons
Inventory rating48.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span111 ft (33.8 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 closed3.7 mi (6 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 4 over Interstate 5 built?

It was built in 1968, making it 57 years old in 2025.

What condition is County Road 4 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 4 over Interstate 5 carry?

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

How long is County Road 4 over Interstate 5?

The structure is 224 ft (68.3 m) long with a longest span of 111 ft (33.8 m) and a deck 34 ft wide.

Who owns County Road 4 over Interstate 5?

It is owned by the State Highway Agency.