US Bridges

Fortna Road over Sutter CO Extension Cnl

Fair

Sutter County, California · 0.5 MI W. of Township RD · Structure no. 18C0149

Built
2021
4 years old
Condition
Fair
inspected February 2023
Type
Arch - Deck
Concrete
Length
25 ft
1 main span
Daily traffic
100
2021 count
Owner
County
County Highway Agency

About this bridge

Fortna Road over Sutter CO Extension Cnl is a concrete arch - deck carrying Fortna Road over Sutter CO Extension Cnl in Sutter County, California. It was built in 2021, so it is 4 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 5% of them trucks, projected to reach 130 by 2041. The structure is 25 ft (7.6 m) long and 40 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesFortna Road
CrossesSutter CO Extension Cnl
Location0.5 MI W. of Township RD
RouteCounty Highway 0
CountySutter County
StateCalifornia
Coordinates39.1561, -121.69826
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width40 ft (12.2 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic130 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Fortna Road over Sutter CO Extension Cnl built?

It was built in 2021, making it 4 years old in 2025.

What condition is Fortna Road over Sutter CO Extension Cnl in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does Fortna Road over Sutter CO Extension Cnl carry?

About 100 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Fortna Road over Sutter CO Extension Cnl?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 40 ft wide.

Who owns Fortna Road over Sutter CO Extension Cnl?

It is owned by the County Highway Agency.