US Bridges

I 580 over Browns Creek

Fair

Washoe County, Nevada · North of Washoe Valley · Structure no. B1947

Built
2011
14 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
525 ft
3 main spans
Daily traffic
40,500
2021 count
Owner
State
State Highway Agency

About this bridge

I 580 over Browns Creek is a prestressed concrete continuous box beam or girders - single or spread carrying I 580 over Browns Creek in Washoe County, Nevada. It was built in 2011, so it is 14 years old, younger 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 40,500 vehicles a day, roughly 5% of them trucks, projected to reach 47,500 by 2040. The structure is 525 ft (160 m) long and 123 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesI 580
CrossesBrowns Creek
LocationNorth of Washoe Valley
RouteInterstate 580
StateNevada
Coordinates39.34006, -119.80511
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating68 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length525 ft (160 m)
Longest span217 ft (66 m)
Deck width123 ft (37.5 m)
Roadway width118 ft (36 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,500 (2021)
Projected traffic47,500 by 2040
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 580 over Browns Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is I 580 over Browns Creek 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 July 2024.

How much traffic does I 580 over Browns Creek carry?

About 40,500 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is I 580 over Browns Creek?

The structure is 525 ft (160 m) long with a longest span of 217 ft (66 m) and a deck 123 ft wide.

Who owns I 580 over Browns Creek?

It is owned by the State Highway Agency.