US Bridges

County Road # 13 over Slough 7

Good

Yolo County, California · 0.25 MI East of CR 98 · Structure no. 22C0151

Built
1979
46 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
1,309
2013 count
Owner
County
County Highway Agency

About this bridge

County Road # 13 over Slough 7 is a concrete slab carrying County Road # 13 over Slough 7 in Yolo County, California. It was built in 1979, so it is 46 years old, younger 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 1,309 vehicles a day, roughly 10% of them trucks, projected to reach 1,918 by 2041. The structure is 33 ft (10.1 m) long and 31 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesCounty Road # 13
CrossesSlough 7
Location0.25 MI East of CR 98
RouteCounty Highway 0
CountyYolo County
StateCalifornia
Coordinates38.79338, -121.79836
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 inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating70.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,309 (2013)
Projected traffic1,918 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 # 13 over Slough 7 built?

It was built in 1979, making it 46 years old in 2025.

What condition is County Road # 13 over Slough 7 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 2023.

How much traffic does County Road # 13 over Slough 7 carry?

About 1,309 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is County Road # 13 over Slough 7?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns County Road # 13 over Slough 7?

It is owned by the County Highway Agency.