US Bridges

US 93 NB over Big Sandy River

Fair

Mohave County, Arizona · 35.7 MI S JCT I-40 · Structure no. 02355

Built
1993
32 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
881 ft
7 main spans
Daily traffic
4,724
2022 count
Owner
State
State Highway Agency

About this bridge

US 93 NB over Big Sandy River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 93 NB over Big Sandy River in Mohave County, Arizona. It was built in 1993, so it is 32 years old, younger 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 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 4,724 vehicles a day, roughly 37% of them trucks, projected to reach 4,734 by 2042. The structure is 881 ft (268.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 93 NB
CrossesBig Sandy River
Location35.7 MI S JCT I-40
RouteU.S. Route 93
StateArizona
Coordinates34.6628, -113.5807
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length881 ft (268.5 m)
Longest span125 ft (38.1 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,724 (2022)
Projected traffic4,734 by 2042
Trucks37%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 NB over Big Sandy River built?

It was built in 1993, making it 32 years old in 2025.

What condition is US 93 NB over Big Sandy 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 December 2024.

How much traffic does US 93 NB over Big Sandy River carry?

About 4,724 vehicles per day (2022 count), of which roughly 37% are trucks.

How long is US 93 NB over Big Sandy River?

The structure is 881 ft (268.5 m) long with a longest span of 125 ft (38.1 m) and a deck 47 ft wide.

Who owns US 93 NB over Big Sandy River?

It is owned by the State Highway Agency.