US Bridges

On Ramp I 15N over D Street

Good

Clark County, Nevada · Las Vegas · Structure no. I1340R

Built
2010
15 years old
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
374 ft
3 main spans
Daily traffic
14,500
2017 count
Owner
State
State Highway Agency

About this bridge

On Ramp I 15N over D Street is a prestressed concrete continuous box beam or girders - single or spread carrying On Ramp I 15N over D Street in Clark County, Nevada. It was built in 2010, so it is 15 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 14,500 vehicles a day, roughly 3% of them trucks, projected to reach 29,988 by 2040. The structure is 374 ft (114 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesOn Ramp I 15N
CrossesD Street
LocationLas Vegas
RouteInterstate 15
StateNevada
Coordinates36.17914, -115.1469
Functional classUrban 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.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating60.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length374 ft (114 m)
Longest span152 ft (46.3 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,500 (2017)
Projected traffic29,988 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was On Ramp I 15N over D Street built?

It was built in 2010, making it 15 years old in 2025.

What condition is On Ramp I 15N over D Street 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 January 2024.

How much traffic does On Ramp I 15N over D Street carry?

About 14,500 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is On Ramp I 15N over D Street?

The structure is 374 ft (114 m) long with a longest span of 152 ft (46.3 m) and a deck 29 ft wide.

Who owns On Ramp I 15N over D Street?

It is owned by the State Highway Agency.