US Bridges

I 580 over St. James Parkway

Good

Washoe County, Nevada · West of Old Washoe City · Structure no. H2342S

Built
2011
14 years old
Condition
Good
inspected June 2022
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
163 ft
1 main span
Daily traffic
20,250
2021 count
Owner
State
State Highway Agency

About this bridge

I 580 over St. James Parkway is a prestressed concrete box beam or girders - single or spread carrying I 580 over St. James Parkway 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 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 20,250 vehicles a day, roughly 3% of them trucks, projected to reach 44,674 by 2040. The structure is 163 ft (49.7 m) long and 63 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI 580
CrossesSt. James Parkway
LocationWest of Old Washoe City
RouteInterstate 580
CountyWashoe County
StateNevada
Coordinates39.34226, -119.80026
Functional classRural Principal Arterial - Interstate

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.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating69.3 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length163 ft (49.7 m)
Longest span160 ft (48.8 m)
Deck width63 ft (19.2 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,250 (2021)
Projected traffic44,674 by 2040
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 St. James Parkway built?

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

What condition is I 580 over St. James Parkway 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 June 2022.

How much traffic does I 580 over St. James Parkway carry?

About 20,250 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is I 580 over St. James Parkway?

The structure is 163 ft (49.7 m) long with a longest span of 160 ft (48.8 m) and a deck 63 ft wide.

Who owns I 580 over St. James Parkway?

It is owned by the State Highway Agency.