US Bridges

I 515 US 95 US 93 over Twain Avenue

Fair

Clark County, Nevada · Las Vegas · Structure no. H1451

Built
1981
44 years old
Condition
Fair
inspected December 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
154 ft
1 main span
Daily traffic
147,000
2021 count
Owner
State
State Highway Agency

About this bridge

I 515 US 95 US 93 over Twain Avenue is a prestressed concrete box beam or girders - multiple carrying I 515 US 95 US 93 over Twain Avenue in Clark County, Nevada. It was built in 1981, so it is 44 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 147,000 vehicles a day, roughly 7% of them trucks, projected to reach 295,000 by 2040. The structure is 154 ft (46.9 m) long and 145 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 515 US 95 US 93
CrossesTwain Avenue
LocationLas Vegas
RouteU.S. Route 515
CountyClark County
StateNevada
Coordinates36.1223, -115.08366
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating75.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length154 ft (46.9 m)
Longest span152 ft (46.3 m)
Deck width145 ft (44.3 m)
Roadway width140 ft (42.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic147,000 (2021)
Projected traffic295,000 by 2040
Trucks7%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$3.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 515 US 95 US 93 over Twain Avenue built?

It was built in 1981, making it 44 years old in 2025.

What condition is I 515 US 95 US 93 over Twain Avenue 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 December 2021.

How much traffic does I 515 US 95 US 93 over Twain Avenue carry?

About 147,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I 515 US 95 US 93 over Twain Avenue?

The structure is 154 ft (46.9 m) long with a longest span of 152 ft (46.3 m) and a deck 145 ft wide.

Who owns I 515 US 95 US 93 over Twain Avenue?

It is owned by the State Highway Agency.