US Bridges

W Biggs Gridley RD over Br Sutter Butte Canal

Fair

Butte County, California · 1.6 MI N/O Grid-Colus HWY · Structure no. 12C0283

Built
1948
77 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
1,659
2019 count
Owner
County
County Highway Agency

About this bridge

W Biggs Gridley RD over Br Sutter Butte Canal is a steel stringer/multi-beam or girder carrying W Biggs Gridley RD over Br Sutter Butte Canal in Butte County, California. It was built in 1948, so it is 77 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 1,659 vehicles a day, roughly 8% of them trucks, projected to reach 1,069 by 2044. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesW Biggs Gridley RD
CrossesBr Sutter Butte Canal
Location1.6 MI N/O Grid-Colus HWY
RouteCounty Highway 0
Coordinates39.38552, -121.70665
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating24.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,659 (2019)
Projected traffic1,069 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 W Biggs Gridley RD over Br Sutter Butte Canal built?

It was built in 1948, making it 77 years old in 2025.

What condition is W Biggs Gridley RD over Br 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 W Biggs Gridley RD over Br Sutter Butte Canal carry?

About 1,659 vehicles per day (2019 count), of which roughly 8% are trucks.

How long is W Biggs Gridley RD over Br Sutter Butte Canal?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 28 ft wide.

Who owns W Biggs Gridley RD over Br Sutter Butte Canal?

It is owned by the County Highway Agency.