US Bridges

Bishop Road over Sutter-Butte Canal

Fair

Sutter County, California · 0.2 MI E of Kent RD · Structure no. 18C0049

Built
1950
75 years old, rebuilt 1975
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
49 ft
3 main spans
Daily traffic
95
2015 count
Owner
County
County Highway Agency

About this bridge

Bishop Road over Sutter-Butte Canal is a wood or timber stringer/multi-beam or girder carrying Bishop Road over Sutter-Butte Canal in Sutter County, California. It was built in 1950 and reconstructed in 1975, so it is 75 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 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 95 vehicles a day, projected to reach 52 by 2042. The structure is 49 ft (14.9 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesBishop Road
CrossesSutter-Butte Canal
Location0.2 MI E of Kent RD
RouteCounty Highway 0
CountySutter County
StateCalifornia
Coordinates39.25941, -121.63708
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.8 US tons
Inventory rating27.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckCorrugated steel
Main spans3
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span16 ft (5 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (2015)
Projected traffic52 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Bishop Road over Sutter-Butte Canal built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1975.

What condition is Bishop Road 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 2024.

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

About 95 vehicles per day (2015 count).

How long is Bishop Road over Sutter-Butte Canal?

The structure is 49 ft (14.9 m) long with a longest span of 16 ft (5 m) and a deck 16 ft wide.

Who owns Bishop Road over Sutter-Butte Canal?

It is owned by the County Highway Agency.