US Bridges

SR 726/OLD River R over Carson River

Good

Churchill County, Nevada · North of Fallon · Structure no. B 547

Built
1951
74 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
91 ft
5 main spans
Daily traffic
360
2017 count
Owner
State
State Highway Agency

About this bridge

SR 726/OLD River R over Carson River is a concrete slab carrying SR 726/OLD River R over Carson River in Churchill County, Nevada. It was built in 1951, so it is 74 years old, older 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 360 vehicles a day, roughly 9% of them trucks, projected to reach 460 by 2040. The structure is 91 ft (27.6 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR 726/OLD River R
CrossesCarson River
LocationNorth of Fallon
RouteCounty Highway 726
StateNevada
Coordinates39.51142, -118.74444
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 inspectionJanuary 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating27.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length91 ft (27.6 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2017)
Projected traffic460 by 2040
Trucks9%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$502,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 726/OLD River R over Carson River built?

It was built in 1951, making it 74 years old in 2025.

What condition is SR 726/OLD River R over Carson River 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 January 2023.

How much traffic does SR 726/OLD River R over Carson River carry?

About 360 vehicles per day (2017 count), of which roughly 9% are trucks.

How long is SR 726/OLD River R over Carson River?

The structure is 91 ft (27.6 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns SR 726/OLD River R over Carson River?

It is owned by the State Highway Agency.