US Bridges

I 80 over Overflow Relief Culvert

Fair

Washoe County, Nevada · Reno · Structure no. B1349

Built
1971
54 years old
Condition
Fair
inspected April 2022
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
111,000
2021 count
Owner
State
State Highway Agency

About this bridge

I 80 over Overflow Relief Culvert is a concrete culvert carrying I 80 over Overflow Relief Culvert in Washoe County, Nevada. It was built in 1971, so it is 54 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 111,000 vehicles a day, roughly 15% of them trucks, projected to reach 165,500 by 2040. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI 80
CrossesOverflow Relief Culvert
LocationReno
RouteInterstate 80
CountyWashoe County
StateNevada
Coordinates39.53085, -119.82765
Functional classUrban Principal Arterial - Interstate

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 inspectionApril 2022
Inspection intervalevery 48 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 rating65.5 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic111,000 (2021)
Projected traffic165,500 by 2040
Trucks15%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$371,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I 80 over Overflow Relief Culvert built?

It was built in 1971, making it 54 years old in 2025.

What condition is I 80 over Overflow Relief Culvert 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 April 2022.

How much traffic does I 80 over Overflow Relief Culvert carry?

About 111,000 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is I 80 over Overflow Relief Culvert?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns I 80 over Overflow Relief Culvert?

It is owned by the State Highway Agency.