US Bridges

Wise RD over Auburn Ravine

Fair

Placer County, California · Junct With Ophir RD · Structure no. 19C0036

Built
1940
85 years old, rebuilt 1970
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
26 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 stringer/multi-beam or girder carrying Wise RD over Auburn Ravine in Placer County, California. It was built in 1940 and reconstructed in 1970, so it is 85 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 1,611 vehicles a day, roughly 2% of them trucks, projected to reach 2,828 by 2043. The structure is 26 ft (7.9 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesWise RD
CrossesAuburn Ravine
LocationJunct With Ophir RD
RouteCounty Highway 0
Coordinates38.89058, -121.09706
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.4 US tons
Inventory rating19 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span22 ft (6.7 m)
Deck width37 ft (11.2 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,611 (2006)
Projected traffic2,828 by 2043
Trucks2%
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 1940, making it 85 years old in 2025. It was reconstructed in 1970.

What condition is Wise RD over Auburn 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 April 2023.

How much traffic does Wise RD over Auburn Ravine carry?

About 1,611 vehicles per day (2006 count), of which roughly 2% are trucks.

How long is Wise RD over Auburn Ravine?

The structure is 26 ft (7.9 m) long with a longest span of 22 ft (6.7 m) and a deck 37 ft wide.

Who owns Wise RD over Auburn Ravine?

It is owned by the County Highway Agency.