US Bridges

Happy Valley Road over North Fk Cosumnes River

Fair

El Dorado County, California · 1.3 MI E Mt Aukum RD · Structure no. 25C0091

Built
1936
89 years old
Condition
Fair
inspected June 2023
Type
Girder and Floorbeam System
Concrete
Length
40 ft
1 main span
Daily traffic
240
2010 count
Owner
County
County Highway Agency

About this bridge

Happy Valley Road over North Fk Cosumnes River is a concrete girder and floorbeam system carrying Happy Valley Road over North Fk Cosumnes River in El Dorado County, California. It was built in 1936, so it is 89 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 240 vehicles a day, roughly 10% of them trucks, projected to reach 332 by 2043. The structure is 40 ft (12.2 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHappy Valley Road
CrossesNorth Fk Cosumnes River
Location1.3 MI E Mt Aukum RD
RouteCounty Highway 0
CountyEl Dorado County
StateCalifornia
Coordinates38.65394, -120.66527
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating33.6 US tons
Inventory rating20.4 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span37 ft (11.4 m)
Deck width21 ft (6.5 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2010)
Projected traffic332 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Happy Valley Road over North Fk Cosumnes River built?

It was built in 1936, making it 89 years old in 2025.

What condition is Happy Valley Road over North Fk Cosumnes River 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 June 2023.

How much traffic does Happy Valley Road over North Fk Cosumnes River carry?

About 240 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Happy Valley Road over North Fk Cosumnes River?

The structure is 40 ft (12.2 m) long with a longest span of 37 ft (11.4 m) and a deck 21 ft wide.

Who owns Happy Valley Road over North Fk Cosumnes River?

It is owned by the County Highway Agency.