US Bridges

SR756 Centerville over Cottonwood Slough

Fair

Douglas County, Nevada · South of Gardnerville · Structure no. B 287

Built
1935
90 years old, rebuilt 1951
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
67 ft
6 main spans
Daily traffic
5,150
2021 count
Owner
State
State Highway Agency

About this bridge

SR756 Centerville over Cottonwood Slough is a concrete culvert carrying SR756 Centerville over Cottonwood Slough in Douglas County, Nevada. It was built in 1935 and reconstructed in 1951, so it is 90 years old, older than the Nevada average of 36.4 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 5,150 vehicles a day, roughly 4% of them trucks, projected to reach 12,658 by 2040. The structure is 67 ft (20.4 m) long and 50 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR756 Centerville
CrossesCottonwood Slough
LocationSouth of Gardnerville
RouteState Highway 756
CountyDouglas County
StateNevada
Coordinates38.93919, -119.75174
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating42.4 US tons
Inventory rating25.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span10 ft (3 m)
Deck width50 ft (15.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,150 (2021)
Projected traffic12,658 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$338,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR756 Centerville over Cottonwood Slough built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1951.

What condition is SR756 Centerville over Cottonwood Slough 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 May 2023.

How much traffic does SR756 Centerville over Cottonwood Slough carry?

About 5,150 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is SR756 Centerville over Cottonwood Slough?

The structure is 67 ft (20.4 m) long with a longest span of 10 ft (3 m) and a deck 50 ft wide.

Who owns SR756 Centerville over Cottonwood Slough?

It is owned by the State Highway Agency.