US Bridges

Garden Bar Road over Little Wolf Creek

Good

Nevada County, California · 2.8 MI South of Wolf RD · Structure no. 17C0074

Built
1901
124 years old, rebuilt 2018
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
44 ft
2 main spans
Daily traffic
1,075
2014 count
Owner
County
County Highway Agency

About this bridge

Garden Bar Road over Little Wolf Creek is a steel continuous stringer/multi-beam or girder carrying Garden Bar Road over Little Wolf Creek in Nevada County, California. It was built in 1901 and reconstructed in 2018, so it is 124 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 1,075 vehicles a day, roughly 2% of them trucks, projected to reach 1,556 by 2041. The structure is 44 ft (13.4 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesGarden Bar Road
CrossesLittle Wolf Creek
Location2.8 MI South of Wolf RD
RouteCounty Highway 0
Coordinates39.04956, -121.17166
Functional classRural Minor 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 protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating50 US tons
Inventory rating29.7 US tons

Structure

MaterialSteel Continuous
DeckCorrugated steel
Main spans2
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span21 ft (6.5 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,075 (2014)
Projected traffic1,556 by 2041
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 Garden Bar Road over Little Wolf Creek built?

It was built in 1901, making it 124 years old in 2025. It was reconstructed in 2018.

What condition is Garden Bar Road over Little Wolf Creek 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 March 2023.

How much traffic does Garden Bar Road over Little Wolf Creek carry?

About 1,075 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is Garden Bar Road over Little Wolf Creek?

The structure is 44 ft (13.4 m) long with a longest span of 21 ft (6.5 m) and a deck 22 ft wide.

Who owns Garden Bar Road over Little Wolf Creek?

It is owned by the County Highway Agency.