US Bridges

Afton RD over Little Dry Creek

Fair

Butte County, California · 0.2 MI E Aguas Frias RD · Structure no. 12C0382

Built
1937
88 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
2 main spans
Daily traffic
105
2019 count
Owner
County
County Highway Agency

About this bridge

Afton RD over Little Dry Creek is a steel stringer/multi-beam or girder carrying Afton RD over Little Dry Creek in Butte County, California. It was built in 1937, so it is 88 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 105 vehicles a day, roughly 20% of them trucks, projected to reach 147 by 2041. The structure is 36 ft (11 m) long and 29 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesAfton RD
CrossesLittle Dry Creek
Location0.2 MI E Aguas Frias RD
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.4204, -121.85402
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.
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
ScourUnknown foundation; not evaluated for scour
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length36 ft (11 m)
Longest span17 ft (5.2 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105 (2019)
Projected traffic147 by 2041
Trucks20%
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 Afton RD over Little Dry Creek built?

It was built in 1937, making it 88 years old in 2025.

What condition is Afton RD over Little Dry 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 Afton RD over Little Dry Creek carry?

About 105 vehicles per day (2019 count), of which roughly 20% are trucks.

How long is Afton RD over Little Dry Creek?

The structure is 36 ft (11 m) long with a longest span of 17 ft (5.2 m) and a deck 29 ft wide.

Who owns Afton RD over Little Dry Creek?

It is owned by the County Highway Agency.