US Bridges

IRR I 15 over UPRR

Fair

Clark County, Nevada · North of Las Vegas · Structure no. G 654S

Built
1958
67 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
222 ft
1 main span
Daily traffic
14,600
2021 count
Owner
State
State Highway Agency

About this bridge

IRR I 15 over UPRR is a steel stringer/multi-beam or girder carrying IRR I 15 over UPRR in Clark County, Nevada. It was built in 1958, so it is 67 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 5 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 14,600 vehicles a day, roughly 24% of them trucks, projected to reach 26,472 by 2040. The structure is 222 ft (67.8 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIRR I 15
CrossesUPRR
LocationNorth of Las Vegas
RouteInterstate 15
CountyClark County
StateNevada
Coordinates36.44731, -114.84872
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.2 US tons
Inventory rating30.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length222 ft (67.8 m)
Longest span76 ft (23.2 m)
Deck width43 ft (13.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2021)
Projected traffic26,472 by 2040
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR I 15 over UPRR built?

It was built in 1958, making it 67 years old in 2025.

What condition is IRR I 15 over UPRR 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 November 2024.

How much traffic does IRR I 15 over UPRR carry?

About 14,600 vehicles per day (2021 count), of which roughly 24% are trucks.

How long is IRR I 15 over UPRR?

The structure is 222 ft (67.8 m) long with a longest span of 76 ft (23.2 m) and a deck 43 ft wide.

Who owns IRR I 15 over UPRR?

It is owned by the State Highway Agency.