US Bridges

Retrac Way over Wolf Creek

Good

Nevada County, California · 0.7 MI W/O Lime Kiln RD · Structure no. 17C0104

Built
2017
8 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
650
2014 count
Owner
County
County Highway Agency

About this bridge

Retrac Way over Wolf Creek is a prestressed concrete box beam or girders - single or spread carrying Retrac Way over Wolf Creek in Nevada County, California. It was built in 2017, so it is 8 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 650 vehicles a day, roughly 1% of them trucks, projected to reach 124 by 2041. The structure is 99 ft (30.2 m) long and 31 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesRetrac Way
CrossesWolf Creek
Location0.7 MI W/O Lime Kiln RD
RouteCounty Highway 0
Coordinates39.11165, -121.09696
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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length99 ft (30.2 m)
Longest span95 ft (29 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2014)
Projected traffic124 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 Retrac Way over Wolf Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Retrac Way over 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 August 2023.

How much traffic does Retrac Way over Wolf Creek carry?

About 650 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Retrac Way over Wolf Creek?

The structure is 99 ft (30.2 m) long with a longest span of 95 ft (29 m) and a deck 31 ft wide.

Who owns Retrac Way over Wolf Creek?

It is owned by the County Highway Agency.