US Bridges

Valley Drive over Squirrel Creek

Good

Nevada County, California · 0.1 MI N Rough&ready HWY · Structure no. 17C0095

Built
2007
18 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
746
2014 count
Owner
County
County Highway Agency

About this bridge

Valley Drive over Squirrel Creek is a concrete continuous culvert carrying Valley Drive over Squirrel Creek in Nevada County, California. It was built in 2007, so it is 18 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 746 vehicles a day, roughly 1% of them trucks, projected to reach 616 by 2045. The structure is 37 ft (11.4 m) long. If it were closed, the detour would be 2.5 mi (4 km).

CarriesValley Drive
CrossesSquirrel Creek
Location0.1 MI N Rough&ready HWY
RouteCounty Highway 0
Coordinates39.21191, -121.16296
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length37 ft (11.4 m)
Longest span12 ft (3.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic746 (2014)
Projected traffic616 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Valley Drive over Squirrel Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Valley Drive over Squirrel 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 Valley Drive over Squirrel Creek carry?

About 746 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Valley Drive over Squirrel Creek?

The structure is 37 ft (11.4 m) long with a longest span of 12 ft (3.8 m).

Who owns Valley Drive over Squirrel Creek?

It is owned by the County Highway Agency.