US Bridges

11N46 over So. Fork Amer. River

Good

El Dorado County, California · No Data Entered · Structure no. 050356000001023

Built
1960
65 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
160 ft
4 main spans
Daily traffic
50
2016 count
Owner
Federal
U.S. Forest Service

About this bridge

11N46 over So. Fork Amer. River is a concrete stringer/multi-beam or girder carrying 11N46 over So. Fork Amer. River in El Dorado 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 160 ft (48.8 m) long and 19 ft wide.

Carries11N46
CrossesSo. Fork Amer. River
LocationNo Data Entered
RouteFederal Lands Road 11N46
Coordinates38.76323, -120.32709
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length160 ft (48.8 m)
Longest span70 ft (21.3 m)
Deck width19 ft (5.7 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2016)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 11N46 over So. Fork Amer. River built?

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

What condition is 11N46 over So. Fork Amer. River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does 11N46 over So. Fork Amer. River carry?

About 50 vehicles per day (2016 count).

How long is 11N46 over So. Fork Amer. River?

The structure is 160 ft (48.8 m) long with a longest span of 70 ft (21.3 m) and a deck 19 ft wide.

Who owns 11N46 over So. Fork Amer. River?

It is owned by the U.S. Forest Service.