US Bridges

King Road over Secret Ravine

Good

Placer County, California · 0.9 MI E Taylor Blvd · Structure no. 19C0055

Built
1970
55 years old
Condition
Good
inspected May 2024
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
3,256
2008 count
Owner
County
County Highway Agency

About this bridge

King Road over Secret Ravine is a prestressed concrete slab carrying King Road over Secret Ravine in Placer County, California. It was built in 1970, so it is 55 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 3,256 vehicles a day, roughly 5% of them trucks, projected to reach 3,882 by 2046. The structure is 34 ft (10.4 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesKing Road
CrossesSecret Ravine
Location0.9 MI E Taylor Blvd
RouteCounty Highway 0
CountyPlacer County
StateCalifornia
Coordinates38.82527, -121.17509
Functional classRural Major Collector

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,256 (2008)
Projected traffic3,882 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 King Road over Secret Ravine built?

It was built in 1970, making it 55 years old in 2025.

What condition is King Road over Secret Ravine 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 May 2024.

How much traffic does King Road over Secret Ravine carry?

About 3,256 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is King Road over Secret Ravine?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 32 ft wide.

Who owns King Road over Secret Ravine?

It is owned by the County Highway Agency.