US Bridges

SB 40 over Rio De Flag

Good

Coconino County, Arizona · 0.3 MI W JCT US 180 · Structure no. 20192

Built
2021
4 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
33,068
2022 count
Owner
State
State Highway Agency

About this bridge

SB 40 over Rio De Flag is a prestressed concrete box beam or girders - multiple carrying SB 40 over Rio De Flag in Coconino County, Arizona. It was built in 2021, so it is 4 years old, younger than the Arizona average of 47.8 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 33,068 vehicles a day, roughly 10% of them trucks, projected to reach 71,670 by 2042. The structure is 58 ft (17.7 m) long and 94 ft wide.

Location

Open in Google Maps
CarriesSB 40
CrossesRio De Flag
Location0.3 MI W JCT US 180
RouteInterstate 40
CountyCoconino County
StateArizona
Coordinates35.1986, -111.6526
Functional classUrban Other Principal Arterial

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating77.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length58 ft (17.7 m)
Longest span53 ft (16.2 m)
Deck width94 ft (28.7 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,068 (2022)
Projected traffic71,670 by 2042
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 SB 40 over Rio De Flag built?

It was built in 2021, making it 4 years old in 2025.

What condition is SB 40 over Rio De Flag 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 July 2023.

How much traffic does SB 40 over Rio De Flag carry?

About 33,068 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is SB 40 over Rio De Flag?

The structure is 58 ft (17.7 m) long with a longest span of 53 ft (16.2 m) and a deck 94 ft wide.

Who owns SB 40 over Rio De Flag?

It is owned by the State Highway Agency.