US Bridges

Cassel Road over Hat Creek

Good

Shasta County, California · 0.2 MI NE of S.R. 89 · Structure no. 06C0309

Built
1972
53 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
38 ft
2 main spans
Daily traffic
180
2014 count
Owner
County
County Highway Agency

About this bridge

Cassel Road over Hat Creek is a concrete continuous slab carrying Cassel Road over Hat Creek in Shasta County, California. It was built in 1972, so it is 53 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 180 vehicles a day, roughly 5% of them trucks, projected to reach 331 by 2041. The structure is 38 ft (11.6 m) long and 29 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesCassel Road
CrossesHat Creek
Location0.2 MI NE of S.R. 89
RouteCounty Highway 0
Coordinates40.8795, -121.55805
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 inspectionMay 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span18 ft (5.6 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2014)
Projected traffic331 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cassel Road over Hat Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Cassel Road over Hat 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 May 2023.

How much traffic does Cassel Road over Hat Creek carry?

About 180 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Cassel Road over Hat Creek?

The structure is 38 ft (11.6 m) long with a longest span of 18 ft (5.6 m) and a deck 29 ft wide.

Who owns Cassel Road over Hat Creek?

It is owned by the County Highway Agency.