US Bridges

Swedes Flat Road over Rocky Honcut Creek

FairPosted for load

Butte County, California · 2.6 MI E Bangor HWY · Structure no. 12C0332

Built
1925
100 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
34 ft
1 main span
Daily traffic
234
2019 count
Owner
County
County Highway Agency

About this bridge

Swedes Flat Road over Rocky Honcut Creek is a concrete tee beam carrying Swedes Flat Road over Rocky Honcut Creek in Butte County, California. It was built in 1925, so it is 100 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. Its operating status is: posted for load restriction.

It carries about 234 vehicles a day, roughly 33% of them trucks, projected to reach 314 by 2044. The structure is 34 ft (10.4 m) long and 16 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSwedes Flat Road
CrossesRocky Honcut Creek
Location2.6 MI E Bangor HWY
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.44768, -121.39107
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating17.9 US tons
Inventory rating13.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic234 (2019)
Projected traffic314 by 2044
Trucks33%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Swedes Flat Road over Rocky Honcut Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is Swedes Flat Road over Rocky Honcut 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 August 2023.

How much traffic does Swedes Flat Road over Rocky Honcut Creek carry?

About 234 vehicles per day (2019 count), of which roughly 33% are trucks.

How long is Swedes Flat Road over Rocky Honcut Creek?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 16 ft wide.

Who owns Swedes Flat Road over Rocky Honcut Creek?

It is owned by the County Highway Agency.