US Bridges

Happy Valley RD over A.C.I.D. Canal

Good

Shasta County, California · 50 West of RTE 273 · Structure no. 06C0029

Built
1949
76 years old, rebuilt 1964
Condition
Good
inspected March 2022
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
3,830
2013 count
Owner
County
County Highway Agency

About this bridge

Happy Valley RD over A.C.I.D. Canal is a concrete slab carrying Happy Valley RD over A.C.I.D. Canal in Shasta County, California. It was built in 1949 and reconstructed in 1964, so it is 76 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 3,830 vehicles a day, roughly 5% of them trucks, projected to reach 2,375 by 2044. The structure is 33 ft (10.1 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHappy Valley RD
CrossesA.C.I.D. Canal
Location50 West of RTE 273
RouteCounty Highway 0
Coordinates40.49415, -122.36622
Functional classUrban Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length33 ft (10.1 m)
Longest span33 ft (10.1 m)
Deck width43 ft (13.1 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,830 (2013)
Projected traffic2,375 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 A.C.I.D. Canal built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1964.

What condition is Happy Valley RD over A.C.I.D. Canal 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 2022.

How much traffic does Happy Valley RD over A.C.I.D. Canal carry?

About 3,830 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is Happy Valley RD over A.C.I.D. Canal?

The structure is 33 ft (10.1 m) long with a longest span of 33 ft (10.1 m) and a deck 43 ft wide.

Who owns Happy Valley RD over A.C.I.D. Canal?

It is owned by the County Highway Agency.