US Bridges

County Road 19 over Slough S3

Good

Yolo County, California · 0.12 MI West of CR 91B · Structure no. 22C0144

Built
1940
85 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
650
2015 count
Owner
County
County Highway Agency

About this bridge

County Road 19 over Slough S3 is a concrete slab carrying County Road 19 over Slough S3 in Yolo County, California. It was built in 1940, so it is 85 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 650 vehicles a day, roughly 10% of them trucks, projected to reach 1,095 by 2047. The structure is 22 ft (6.7 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCounty Road 19
CrossesSlough S3
Location0.12 MI West of CR 91B
RouteCounty Highway 0
Coordinates38.71466, -121.92449
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating18.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2015)
Projected traffic1,095 by 2047
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 County Road 19 over Slough S3 built?

It was built in 1940, making it 85 years old in 2025.

What condition is County Road 19 over Slough S3 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 January 2025.

How much traffic does County Road 19 over Slough S3 carry?

About 650 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is County Road 19 over Slough S3?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 23 ft wide.

Who owns County Road 19 over Slough S3?

It is owned by the County Highway Agency.