US Bridges

C.R. #89 over South Fork Willow Slough

Good

Yolo County, California · 0.22 MI N of SR 16 · Structure no. 22C0178

Built
2007
18 years old
Condition
Good
inspected November 2021
Type
Slab
Concrete Continuous
Length
59 ft
3 main spans
Daily traffic
523
2003 count
Owner
County
County Highway Agency

About this bridge

C.R. #89 over South Fork Willow Slough is a concrete continuous slab carrying C.R. #89 over South Fork Willow Slough in Yolo County, California. It was built in 2007, so it is 18 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 523 vehicles a day, roughly 10% of them trucks, projected to reach 1,279 by 2043. The structure is 59 ft (18 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesC.R. #89
CrossesSouth Fork Willow Slough
Location0.22 MI N of SR 16
RouteCounty Highway 0
Coordinates38.68614, -121.96618
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length59 ft (18 m)
Longest span23 ft (7 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic523 (2003)
Projected traffic1,279 by 2043
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 C.R. #89 over South Fork Willow Slough built?

It was built in 2007, making it 18 years old in 2025.

What condition is C.R. #89 over South Fork Willow Slough 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 November 2021.

How much traffic does C.R. #89 over South Fork Willow Slough carry?

About 523 vehicles per day (2003 count), of which roughly 10% are trucks.

How long is C.R. #89 over South Fork Willow Slough?

The structure is 59 ft (18 m) long with a longest span of 23 ft (7 m) and a deck 38 ft wide.

Who owns C.R. #89 over South Fork Willow Slough?

It is owned by the County Highway Agency.