US Bridges

I 80W over SR647 W 4th ST

Good

Washoe County, Nevada · West of Reno · Structure no. I 775W

Built
1964
61 years old
Condition
Good
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
152 ft
3 main spans
Daily traffic
22,750
2021 count
Owner
State
State Highway Agency

About this bridge

I 80W over SR647 W 4th ST is a concrete continuous tee beam carrying I 80W over SR647 W 4th ST in Washoe County, Nevada. It was built in 1964, so it is 61 years old, older 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 22,750 vehicles a day, roughly 15% of them trucks, projected to reach 54,602 by 2040. The structure is 152 ft (46.3 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 80W
CrossesSR647 W 4th ST
LocationWest of Reno
RouteInterstate 80
StateNevada
Coordinates39.51485, -119.91445
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating27.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length152 ft (46.3 m)
Longest span60 ft (18.3 m)
Deck width43 ft (13.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,750 (2021)
Projected traffic54,602 by 2040
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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$881,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 80W over SR647 W 4th ST built?

It was built in 1964, making it 61 years old in 2025.

What condition is I 80W over SR647 W 4th ST 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 May 2024.

How much traffic does I 80W over SR647 W 4th ST carry?

About 22,750 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is I 80W over SR647 W 4th ST?

The structure is 152 ft (46.3 m) long with a longest span of 60 ft (18.3 m) and a deck 43 ft wide.

Who owns I 80W over SR647 W 4th ST?

It is owned by the State Highway Agency.