US Bridges

French Gulch Road over French Gulch

Good

Shasta County, California · 2.0 MI Nw/O Trinity Mtn R · Structure no. 06C0284

Built
1965
60 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
60
2013 count
Owner
County
County Highway Agency

About this bridge

French Gulch Road over French Gulch is a concrete slab carrying French Gulch Road over French Gulch in Shasta County, California. It was built in 1965, so it is 60 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 60 vehicles a day, roughly 5% of them trucks, projected to reach 123 by 2044. The structure is 25 ft (7.6 m) long and 19 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesFrench Gulch Road
CrossesFrench Gulch
Location2.0 MI Nw/O Trinity Mtn R
RouteCounty Highway 0
Coordinates40.71059, -122.66813
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width19 ft (5.8 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2013)
Projected traffic123 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 French Gulch Road over French Gulch built?

It was built in 1965, making it 60 years old in 2025.

What condition is French Gulch Road over French Gulch 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 August 2024.

How much traffic does French Gulch Road over French Gulch carry?

About 60 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is French Gulch Road over French Gulch?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 19 ft wide.

Who owns French Gulch Road over French Gulch?

It is owned by the County Highway Agency.