US Bridges

Gridley Colusa RD over Butte Creek

Fair

Butte County, California · At Colusa CO Line · Structure no. 12C0073

Built
1958
67 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete Continuous
Length
154 ft
3 main spans
Daily traffic
749
2019 count
Owner
County
County Highway Agency

About this bridge

Gridley Colusa RD over Butte Creek is a concrete continuous tee beam carrying Gridley Colusa RD over Butte Creek in Butte County, California. It was built in 1958, so it is 67 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 749 vehicles a day, roughly 20% of them trucks, projected to reach 1,175 by 2044. The structure is 154 ft (46.9 m) long and 32 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

Open in Google Maps
CarriesGridley Colusa RD
CrossesButte Creek
LocationAt Colusa CO Line
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.36181, -121.89307
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length154 ft (46.9 m)
Longest span60 ft (18.3 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic749 (2019)
Projected traffic1,175 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 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 Gridley Colusa RD over Butte Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Gridley Colusa RD over Butte Creek 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 October 2024.

How much traffic does Gridley Colusa RD over Butte Creek carry?

About 749 vehicles per day (2019 count), of which roughly 20% are trucks.

How long is Gridley Colusa RD over Butte Creek?

The structure is 154 ft (46.9 m) long with a longest span of 60 ft (18.3 m) and a deck 32 ft wide.

Who owns Gridley Colusa RD over Butte Creek?

It is owned by the County Highway Agency.