US Bridges

West Anderson DR over Olinda Creek

Good

Shasta County, California · 0.1 MI S of South ST · Structure no. 06C0283

Built
1979
46 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
34 ft
2 main spans
Daily traffic
800
2014 count
Owner
County
County Highway Agency

About this bridge

West Anderson DR over Olinda Creek is a concrete continuous slab carrying West Anderson DR over Olinda Creek in Shasta County, California. It was built in 1979, so it is 46 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 800 vehicles a day, roughly 5% of them trucks, projected to reach 713 by 2041. The structure is 34 ft (10.4 m) long and 29 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesWest Anderson DR
CrossesOlinda Creek
Location0.1 MI S of South ST
RouteCounty Highway 0
Coordinates40.44008, -122.30448
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span17 ft (5.2 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2014)
Projected traffic713 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 West Anderson DR over Olinda Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is West Anderson DR over Olinda 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 April 2024.

How much traffic does West Anderson DR over Olinda Creek carry?

About 800 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is West Anderson DR over Olinda Creek?

The structure is 34 ft (10.4 m) long with a longest span of 17 ft (5.2 m) and a deck 29 ft wide.

Who owns West Anderson DR over Olinda Creek?

It is owned by the County Highway Agency.