US Bridges

I-11 over Intertie

Good

Clark County, Nevada · Boulder Bypass · Structure no. H3174

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
139 ft
1 main span
Daily traffic
17,100
2021 count
Owner
State
State Highway Agency

About this bridge

I-11 over Intertie is a prestressed concrete box beam or girders - single or spread carrying I-11 over Intertie in Clark County, Nevada. It was built in 2017, so it is 8 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 17,100 vehicles a day, projected to reach 84,793 by 2040. The structure is 139 ft (42.5 m) long and 103 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-11
CrossesIntertie
LocationBoulder Bypass
RouteInterstate 11
CountyClark County
StateNevada
Coordinates35.98239, -114.79358
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating65 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length139 ft (42.5 m)
Longest span139 ft (42.5 m)
Deck width103 ft (31.4 m)
Roadway width98 ft (29.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,100 (2021)
Projected traffic84,793 by 2040
Trucks—
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 I-11 over Intertie built?

It was built in 2017, making it 8 years old in 2025.

What condition is I-11 over Intertie 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 September 2023.

How much traffic does I-11 over Intertie carry?

About 17,100 vehicles per day (2021 count).

How long is I-11 over Intertie?

The structure is 139 ft (42.5 m) long with a longest span of 139 ft (42.5 m) and a deck 103 ft wide.

Who owns I-11 over Intertie?

It is owned by the State Highway Agency.