US Bridges

Farris RD over Main Drainage Canal

Fair

Butte County, California · 1.5 MI N Grid-Colusa HWY · Structure no. 12C0387

Built
1942
83 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
3 main spans
Daily traffic
89
2019 count
Owner
County
County Highway Agency

About this bridge

Farris RD over Main Drainage Canal is a steel stringer/multi-beam or girder carrying Farris RD over Main Drainage Canal in Butte County, California. It was built in 1942, so it is 83 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 89 vehicles a day, roughly 26% of them trucks, projected to reach 208 by 2044. The structure is 61 ft (18.6 m) long and 22 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesFarris RD
CrossesMain Drainage Canal
Location1.5 MI N Grid-Colusa HWY
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.38527, -121.78183
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 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 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 rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans3
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span20 ft (6.1 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89 (2019)
Projected traffic208 by 2044
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 Farris RD over Main Drainage Canal built?

It was built in 1942, making it 83 years old in 2025.

What condition is Farris RD over Main Drainage 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 October 2024.

How much traffic does Farris RD over Main Drainage Canal carry?

About 89 vehicles per day (2019 count), of which roughly 26% are trucks.

How long is Farris RD over Main Drainage Canal?

The structure is 61 ft (18.6 m) long with a longest span of 20 ft (6.1 m) and a deck 22 ft wide.

Who owns Farris RD over Main Drainage Canal?

It is owned by the County Highway Agency.