US Bridges

Doty Road over Hat Creek

Good

Shasta County, California · 1.0 MI NE of SR 89 · Structure no. 06C0308

Built
1978
47 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete
Length
42 ft
1 main span
Daily traffic
200
2014 count
Owner
County
County Highway Agency

About this bridge

Doty Road over Hat Creek is a concrete slab carrying Doty Road over Hat Creek in Shasta County, California. It was built in 1978, so it is 47 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 200 vehicles a day, roughly 10% of them trucks, projected to reach 320 by 2041. The structure is 42 ft (12.8 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesDoty Road
CrossesHat Creek
Location1.0 MI NE of SR 89
RouteCounty Highway 0
Coordinates40.81639, -121.50397
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 protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 rating103.6 US tons
Inventory rating62.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length42 ft (12.8 m)
Longest span41 ft (12.5 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2014)
Projected traffic320 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Doty Road over Hat Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Doty 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 Doty Road over Hat Creek carry?

About 200 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Doty Road over Hat Creek?

The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 29 ft wide.

Who owns Doty Road over Hat Creek?

It is owned by the County Highway Agency.