US Bridges

Kent Road over Sutter-Butte Canal

Poor

Sutter County, California · 0.2 MI S of Mcdonald Ave · Structure no. 18C0132

Built
1938
87 years old
Condition
Poor
inspected February 2025
Type
Culvert
Steel
Length
42 ft
4 main spans
Daily traffic
389
2015 count
Owner
County
County Highway Agency

About this bridge

Kent Road over Sutter-Butte Canal is a steel culvert carrying Kent Road over Sutter-Butte Canal in Sutter County, California. It was built in 1938, so it is 87 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 389 vehicles a day, roughly 5% of them trucks, projected to reach 628 by 2047. The structure is 42 ft (12.8 m) long and 28 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesKent Road
CrossesSutter-Butte Canal
Location0.2 MI S of Mcdonald Ave
RouteCounty Highway 0
CountySutter County
StateCalifornia
Coordinates39.24609, -121.63992
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating19.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span9 ft (2.6 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic389 (2015)
Projected traffic628 by 2047
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$289,000 (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Kent Road over Sutter-Butte Canal built?

It was built in 1938, making it 87 years old in 2025.

What condition is Kent Road over Sutter-Butte Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Kent Road over Sutter-Butte Canal carry?

About 389 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Kent Road over Sutter-Butte Canal?

The structure is 42 ft (12.8 m) long with a longest span of 9 ft (2.6 m) and a deck 28 ft wide.

Who owns Kent Road over Sutter-Butte Canal?

It is owned by the County Highway Agency.