US Bridges

I 15 over Virgin River

Fair

Mohave County, Arizona · 13.3 MI NE Nev State Line · Structure no. 01615

Built
1973
52 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
822 ft
12 main spans
Daily traffic
31,926
2021 count
Owner
State
State Highway Agency

About this bridge

I 15 over Virgin River is a concrete continuous tee beam carrying I 15 over Virgin River in Mohave County, Arizona. It was built in 1973, so it is 52 years old, older than the Arizona average of 47.8 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 31,926 vehicles a day, roughly 22% of them trucks, projected to reach 31,936 by 2041. The structure is 822 ft (250.5 m) long and 65 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesI 15
CrossesVirgin River
Location13.3 MI NE Nev State Line
RouteInterstate 15
CountyMohave County
StateArizona
Coordinates36.9219, -113.8566
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length822 ft (250.5 m)
Longest span71 ft (21.6 m)
Deck width65 ft (19.9 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,926 (2021)
Projected traffic31,936 by 2041
Trucks22%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$5,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 15 over Virgin River built?

It was built in 1973, making it 52 years old in 2025.

What condition is I 15 over Virgin River 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 August 2023.

How much traffic does I 15 over Virgin River carry?

About 31,926 vehicles per day (2021 count), of which roughly 22% are trucks.

How long is I 15 over Virgin River?

The structure is 822 ft (250.5 m) long with a longest span of 71 ft (21.6 m) and a deck 65 ft wide.

Who owns I 15 over Virgin River?

It is owned by the State Highway Agency.