US Bridges

Cana HWY over Dianes Ditch No 2

Fair

Butte County, California · 1.4 MI W State HWY 99 · Structure no. 12C0302

Built
1921
104 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
276
2017 count
Owner
County
County Highway Agency

About this bridge

Cana HWY over Dianes Ditch No 2 is a concrete continuous slab carrying Cana HWY over Dianes Ditch No 2 in Butte County, California. It was built in 1921, so it is 104 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 276 vehicles a day, roughly 21% of them trucks, projected to reach 747 by 2042. The structure is 21 ft (6.4 m) long and 22 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCana HWY
CrossesDianes Ditch No 2
Location1.4 MI W State HWY 99
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.84038, -121.96772
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span10 ft (3.2 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic276 (2017)
Projected traffic747 by 2042
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Cana HWY over Dianes Ditch No 2 built?

It was built in 1921, making it 104 years old in 2025.

What condition is Cana HWY over Dianes Ditch No 2 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 July 2024.

How much traffic does Cana HWY over Dianes Ditch No 2 carry?

About 276 vehicles per day (2017 count), of which roughly 21% are trucks.

How long is Cana HWY over Dianes Ditch No 2?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3.2 m) and a deck 22 ft wide.

Who owns Cana HWY over Dianes Ditch No 2?

It is owned by the County Highway Agency.