US Bridges

IRR US 395 over Carson River Overflow

Fair

Douglas County, Nevada · South of Carson City · Structure no. B 427

Built
1948
77 years old, rebuilt 1987
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
32,000
2021 count
Owner
State
State Highway Agency

About this bridge

IRR US 395 over Carson River Overflow is a concrete culvert carrying IRR US 395 over Carson River Overflow in Douglas County, Nevada. It was built in 1948 and reconstructed in 1987, so it is 77 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 32,000 vehicles a day, roughly 7% of them trucks, projected to reach 60,000 by 2040. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 32.3 mi (52 km).

Location

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CarriesIRR US 395
CrossesCarson River Overflow
LocationSouth of Carson City
RouteU.S. Route 395
CountyDouglas County
StateNevada
Coordinates39.05611, -119.77993
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating29.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2021)
Projected traffic60,000 by 2040
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.3 mi (52 km)
TollOn a free road
National Highway SystemYes

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$550,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR US 395 over Carson River Overflow built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1987.

What condition is IRR US 395 over Carson River Overflow 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 IRR US 395 over Carson River Overflow carry?

About 32,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is IRR US 395 over Carson River Overflow?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns IRR US 395 over Carson River Overflow?

It is owned by the State Highway Agency.