US Bridges

C.R. 21A over Winters Canal

Fair

Yolo County, California · 0.17 MI E/O Rd. 85B · Structure no. 22C0176

Built
2006
19 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
31 ft
1 main span
Daily traffic
1,050
2009 count
Owner
County
County Highway Agency

About this bridge

C.R. 21A over Winters Canal is a concrete slab carrying C.R. 21A over Winters Canal in Yolo County, California. It was built in 2006, so it is 19 years old, younger 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 1,050 vehicles a day, roughly 3% of them trucks, projected to reach 1,457 by 2041. The structure is 31 ft (9.4 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesC.R. 21A
CrossesWinters Canal
Location0.17 MI E/O Rd. 85B
RouteCounty Highway 0
CountyYolo County
StateCalifornia
Coordinates38.6917, -122.03614
Functional classRural Minor Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length31 ft (9.4 m)
Longest span26 ft (7.9 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2009)
Projected traffic1,457 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 C.R. 21A over Winters Canal built?

It was built in 2006, making it 19 years old in 2025.

What condition is C.R. 21A over Winters Canal 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 October 2023.

How much traffic does C.R. 21A over Winters Canal carry?

About 1,050 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is C.R. 21A over Winters Canal?

The structure is 31 ft (9.4 m) long with a longest span of 26 ft (7.9 m) and a deck 45 ft wide.

Who owns C.R. 21A over Winters Canal?

It is owned by the County Highway Agency.