US Bridges

Biggs East Highway over Sutter-Butte Canal

Fair

Butte County, California · 0.9 MI E/O RTE 99 · Structure no. 12C0251

Built
1956
69 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
1,060
2019 count
Owner
County
County Highway Agency

About this bridge

Biggs East Highway over Sutter-Butte Canal is a concrete continuous slab carrying Biggs East Highway over Sutter-Butte Canal in Butte County, California. It was built in 1956, so it is 69 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 1,060 vehicles a day, roughly 11% of them trucks, projected to reach 3,353 by 2042. The structure is 70 ft (21.3 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesBiggs East Highway
CrossesSutter-Butte Canal
Location0.9 MI E/O RTE 99
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.41503, -121.67354
Functional classRural Major 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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.5 US tons
Inventory rating48.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span28 ft (8.5 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,060 (2019)
Projected traffic3,353 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Biggs East Highway over Sutter-Butte Canal built?

It was built in 1956, making it 69 years old in 2025.

What condition is Biggs East Highway 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 January 2025.

How much traffic does Biggs East Highway over Sutter-Butte Canal carry?

About 1,060 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is Biggs East Highway over Sutter-Butte Canal?

The structure is 70 ft (21.3 m) long with a longest span of 28 ft (8.5 m) and a deck 33 ft wide.

Who owns Biggs East Highway over Sutter-Butte Canal?

It is owned by the County Highway Agency.