US Bridges

Larkin RD over Sutter-Butte Canal

Fair

Sutter County, California · 0.7 MI S/O Paseo RD · Structure no. 18C0121

Built
1964
61 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
1,405
2015 count
Owner
County
County Highway Agency

About this bridge

Larkin RD over Sutter-Butte Canal is a concrete continuous culvert carrying Larkin RD over Sutter-Butte Canal in Sutter County, California. It was built in 1964, so it is 61 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 1,405 vehicles a day, roughly 7% of them trucks, projected to reach 1,566 by 2043. The structure is 26 ft (7.9 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesLarkin RD
CrossesSutter-Butte Canal
Location0.7 MI S/O Paseo RD
RouteCounty Highway 0
CountySutter County
StateCalifornia
Coordinates39.23996, -121.66005
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width41 ft (12.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,405 (2015)
Projected traffic1,566 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Larkin RD over Sutter-Butte Canal built?

It was built in 1964, making it 61 years old in 2025.

What condition is Larkin RD over Sutter-Butte 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 February 2025.

How much traffic does Larkin RD over Sutter-Butte Canal carry?

About 1,405 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Larkin RD over Sutter-Butte Canal?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 41 ft wide.

Who owns Larkin RD over Sutter-Butte Canal?

It is owned by the County Highway Agency.