US Bridges

Sierra College Bl over Secret Ravine

Fair

Placer County, California · 6.2 MI N of Sacto Co.Line · Structure no. 19C0006

Built
1964
61 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
33 ft
3 main spans
Daily traffic
10,106
2010 count
Owner
County
County Highway Agency

About this bridge

Sierra College Bl over Secret Ravine is a concrete continuous culvert carrying Sierra College Bl over Secret Ravine in Placer County, California. It was built in 1964, so it is 61 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 6 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 10,106 vehicles a day, roughly 8% of them trucks, projected to reach 14,330 by 2042. The structure is 33 ft (10.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSierra College Bl
CrossesSecret Ravine
Location6.2 MI N of Sacto Co.Line
RouteCounty Highway 0
CountyPlacer County
StateCalifornia
Coordinates38.79688, -121.20555
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length33 ft (10.2 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,106 (2010)
Projected traffic14,330 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 Sierra College Bl over Secret Ravine built?

It was built in 1964, making it 61 years old in 2025.

What condition is Sierra College Bl over Secret Ravine 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 2024.

How much traffic does Sierra College Bl over Secret Ravine carry?

About 10,106 vehicles per day (2010 count), of which roughly 8% are trucks.

How long is Sierra College Bl over Secret Ravine?

The structure is 33 ft (10.2 m) long with a longest span of 10 ft (3.2 m).

Who owns Sierra College Bl over Secret Ravine?

It is owned by the County Highway Agency.