US Bridges

Frisby RD over Cedar Creek

Good

Shasta County, California · 0.4 MI S of S.R. 299 · Structure no. 06C0176

Built
1960
65 years old
Condition
Good
inspected April 2021
Type
Slab
Concrete
Length
29 ft
1 main span
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

Frisby RD over Cedar Creek is a concrete slab carrying Frisby RD over Cedar Creek in Shasta County, California. It was built in 1960, so it is 65 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 165 by 2043. The structure is 29 ft (8.9 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesFrisby RD
CrossesCedar Creek
Location0.4 MI S of S.R. 299
RouteCounty Highway 0
Coordinates40.79426, -121.93409
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 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating73.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length29 ft (8.9 m)
Longest span26 ft (8 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic165 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Frisby RD over Cedar Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Frisby RD over Cedar 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 2021.

How much traffic does Frisby RD over Cedar Creek carry?

About 100 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is Frisby RD over Cedar Creek?

The structure is 29 ft (8.9 m) long with a longest span of 26 ft (8 m) and a deck 29 ft wide.

Who owns Frisby RD over Cedar Creek?

It is owned by the County Highway Agency.