US Bridges

Aquas Frias RD over Western Canal

Fair

Butte County, California · 1 MI N of Nelson RD · Structure no. 12C0235

Built
1960
65 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
423
2019 count
Owner
County
County Highway Agency

About this bridge

Aquas Frias RD over Western Canal is a concrete continuous slab carrying Aquas Frias RD over Western Canal in Butte County, California. It was built in 1960, so it is 65 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 423 vehicles a day, roughly 15% of them trucks, projected to reach 855 by 2042. The structure is 83 ft (25.3 m) long and 33 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesAquas Frias RD
CrossesWestern Canal
Location1 MI N of Nelson RD
RouteCounty Highway 0
Coordinates39.56617, -121.85687
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating33.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length83 ft (25.3 m)
Longest span32 ft (9.8 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic423 (2019)
Projected traffic855 by 2042
Trucks15%
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 Aquas Frias RD over Western Canal built?

It was built in 1960, making it 65 years old in 2025.

What condition is Aquas Frias RD over Western 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 Aquas Frias RD over Western Canal carry?

About 423 vehicles per day (2019 count), of which roughly 15% are trucks.

How long is Aquas Frias RD over Western Canal?

The structure is 83 ft (25.3 m) long with a longest span of 32 ft (9.8 m) and a deck 33 ft wide.

Who owns Aquas Frias RD over Western Canal?

It is owned by the County Highway Agency.