US Bridges

County Road 12 over Zamora Creek

Good

Yolo County, California · 0.3 MI West of I-5 · Structure no. 22C0186

Built
2016
9 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
31 ft
1 main span
Daily traffic
160
2015 count
Owner
County
County Highway Agency

About this bridge

County Road 12 over Zamora Creek is a concrete slab carrying County Road 12 over Zamora Creek in Yolo County, California. It was built in 2016, so it is 9 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 160 vehicles a day, roughly 3% of them trucks, projected to reach 272 by 2041. The structure is 31 ft (9.6 m) long and 35 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty Road 12
CrossesZamora Creek
Location0.3 MI West of I-5
RouteCounty Highway 0
CountyYolo County
StateCalifornia
Coordinates38.80891, -121.90202
Functional classRural Local

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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length31 ft (9.6 m)
Longest span29 ft (8.8 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2015)
Projected traffic272 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road 12 over Zamora Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is County Road 12 over Zamora Creek 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 12 over Zamora Creek carry?

About 160 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is County Road 12 over Zamora Creek?

The structure is 31 ft (9.6 m) long with a longest span of 29 ft (8.8 m) and a deck 35 ft wide.

Who owns County Road 12 over Zamora Creek?

It is owned by the County Highway Agency.