US Bridges

Howsley Road over King Ravine

Fair

Sutter County, California · 0.2 MI W Pleasant Grov RD · Structure no. 18C0125

Built
1931
94 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
3,311
2011 count
Owner
County
County Highway Agency

About this bridge

Howsley Road over King Ravine is a concrete continuous slab carrying Howsley Road over King Ravine in Sutter County, California. It was built in 1931, so it is 94 years old, older 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 6 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 3,311 vehicles a day, roughly 5% of them trucks, projected to reach 3,677 by 2046. The structure is 37 ft (11.4 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesHowsley Road
CrossesKing Ravine
Location0.2 MI W Pleasant Grov RD
RouteCounty Highway 0
CountySutter County
StateCalifornia
Coordinates38.82392, -121.49275
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length37 ft (11.4 m)
Longest span12 ft (3.6 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,311 (2011)
Projected traffic3,677 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Howsley Road over King Ravine built?

It was built in 1931, making it 94 years old in 2025.

What condition is Howsley Road over King Ravine 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 September 2024.

How much traffic does Howsley Road over King Ravine carry?

About 3,311 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Howsley Road over King Ravine?

The structure is 37 ft (11.4 m) long with a longest span of 12 ft (3.6 m) and a deck 30 ft wide.

Who owns Howsley Road over King Ravine?

It is owned by the County Highway Agency.