US Bridges

I 15N over SR170 Bunkerville RD

Fair

Clark County, Nevada · Southwest of Mesquite · Structure no. I 974N

Built
1966
59 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
113 ft
3 main spans
Daily traffic
12,400
2021 count
Owner
State
State Highway Agency

About this bridge

I 15N over SR170 Bunkerville RD is a concrete continuous slab carrying I 15N over SR170 Bunkerville RD in Clark County, Nevada. It was built in 1966, so it is 59 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 12,400 vehicles a day, roughly 25% of them trucks, projected to reach 35,000 by 2040. The structure is 113 ft (34.4 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 15N
CrossesSR170 Bunkerville RD
LocationSouthwest of Mesquite
RouteInterstate 15
StateNevada
Coordinates36.77034, -114.23447
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.9 US tons
Inventory rating42.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length113 ft (34.4 m)
Longest span43 ft (13.1 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,400 (2021)
Projected traffic35,000 by 2040
Trucks25%
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 15N over SR170 Bunkerville RD built?

It was built in 1966, making it 59 years old in 2025.

What condition is I 15N over SR170 Bunkerville RD 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 I 15N over SR170 Bunkerville RD carry?

About 12,400 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is I 15N over SR170 Bunkerville RD?

The structure is 113 ft (34.4 m) long with a longest span of 43 ft (13.1 m) and a deck 42 ft wide.

Who owns I 15N over SR170 Bunkerville RD?

It is owned by the State Highway Agency.