US Bridges

Happy Valley RD over Spring Gulch

Good

Shasta County, California · 1.5 MI S Canyon RD · Structure no. 06C0273

Built
1950
75 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
3,750
2013 count
Owner
County
County Highway Agency

About this bridge

Happy Valley RD over Spring Gulch is a concrete continuous culvert carrying Happy Valley RD over Spring Gulch in Shasta County, California. It was built in 1950, so it is 75 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 3,750 vehicles a day, roughly 5% of them trucks, projected to reach 3,619 by 2044. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesHappy Valley RD
CrossesSpring Gulch
Location1.5 MI S Canyon RD
RouteCounty Highway 0
CountyShasta County
StateCalifornia
Coordinates40.4608, -122.4005
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length40 ft (12.2 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 traffic3,750 (2013)
Projected traffic3,619 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Happy Valley RD over Spring Gulch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Happy Valley RD over Spring Gulch 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 September 2024.

How much traffic does Happy Valley RD over Spring Gulch carry?

About 3,750 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is Happy Valley RD over Spring Gulch?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.8 m).

Who owns Happy Valley RD over Spring Gulch?

It is owned by the County Highway Agency.