US Bridges

Wise RD over Auburn Ravine

Good

Placer County, California · Btwn Millerton & Stone RD · Structure no. 19C0239

Built
2010
15 years old
Condition
Good
inspected April 2021
Type
Slab
Concrete
Length
47 ft
1 main span
Daily traffic
1,611
2006 count
Owner
County
County Highway Agency

About this bridge

Wise RD over Auburn Ravine is a concrete slab carrying Wise RD over Auburn Ravine in Placer County, California. It was built in 2010, so it is 15 years old, younger 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 1,611 vehicles a day, roughly 5% of them trucks, projected to reach 2,344 by 2043. The structure is 47 ft (14.2 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesWise RD
CrossesAuburn Ravine
LocationBtwn Millerton & Stone RD
RouteCounty Highway 0
Coordinates38.89039, -121.10468
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 protection9 ExcellentNo problems noted.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length47 ft (14.2 m)
Longest span42 ft (12.7 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,611 (2006)
Projected traffic2,344 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Wise RD over Auburn Ravine built?

It was built in 2010, making it 15 years old in 2025.

What condition is Wise RD over Auburn 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 April 2021.

How much traffic does Wise RD over Auburn Ravine carry?

About 1,611 vehicles per day (2006 count), of which roughly 5% are trucks.

How long is Wise RD over Auburn Ravine?

The structure is 47 ft (14.2 m) long with a longest span of 42 ft (12.7 m) and a deck 33 ft wide.

Who owns Wise RD over Auburn Ravine?

It is owned by the County Highway Agency.