US Bridges

I 40; WB over Flagstaff Ranch RD

Fair

Coconino County, Arizona · 2.9 MI W JCT I-17 · Structure no. 02020

Built
1986
39 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
160 ft
1 main span
Daily traffic
10,819
2024 count
Owner
State
State Highway Agency

About this bridge

I 40; WB over Flagstaff Ranch RD is a prestressed concrete box beam or girders - single or spread carrying I 40; WB over Flagstaff Ranch RD in Coconino County, Arizona. It was built in 1986, so it is 39 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 10,819 vehicles a day, roughly 18% of them trucks, projected to reach 10,829 by 2042. The structure is 160 ft (48.8 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesI 40; WB
CrossesFlagstaff Ranch RD
Location2.9 MI W JCT I-17
RouteInterstate 40
CountyCoconino County
StateArizona
Coordinates35.1861, -111.7099
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92 US tons
Inventory rating39 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span155 ft (47.2 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,819 (2024)
Projected traffic10,829 by 2042
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 40; WB over Flagstaff Ranch RD built?

It was built in 1986, making it 39 years old in 2025.

What condition is I 40; WB over Flagstaff Ranch 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 July 2024.

How much traffic does I 40; WB over Flagstaff Ranch RD carry?

About 10,819 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is I 40; WB over Flagstaff Ranch RD?

The structure is 160 ft (48.8 m) long with a longest span of 155 ft (47.2 m) and a deck 45 ft wide.

Who owns I 40; WB over Flagstaff Ranch RD?

It is owned by the State Highway Agency.