US Bridges

ST Clair Rd. over Aa-Canal

Good

Churchill County, Nevada · SW of Fallon · Structure no. B 468

Built
2008
17 years old
Condition
Good
inspected February 2021
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
2,000
2021 count
Owner
County
County Highway Agency

About this bridge

ST Clair Rd. over Aa-Canal is a concrete culvert carrying ST Clair Rd. over Aa-Canal in Churchill County, Nevada. It was built in 2008, so it is 17 years old, younger than the Nevada average of 36.4 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 2,000 vehicles a day, roughly 2% of them trucks, projected to reach 2,482 by 2040. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesST Clair Rd.
CrossesAa-Canal
LocationSW of Fallon
RouteCounty Highway 717
CountyChurchill County
StateNevada
Coordinates39.44548, -118.84536
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2021)
Projected traffic2,482 by 2040
Trucks2%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was ST Clair Rd. over Aa-Canal built?

It was built in 2008, making it 17 years old in 2025.

What condition is ST Clair Rd. over Aa-Canal 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 February 2021.

How much traffic does ST Clair Rd. over Aa-Canal carry?

About 2,000 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is ST Clair Rd. over Aa-Canal?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns ST Clair Rd. over Aa-Canal?

It is owned by the County Highway Agency.