US Bridges

Blue Willow Road over Rio De Flag

Good

Coconino County, Arizona · 0.1 MI W JCT US 180 · Structure no. 10434

Built
2002
23 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Blue Willow Road over Rio De Flag is a prestressed concrete stringer/multi-beam or girder carrying Blue Willow Road over Rio De Flag in Coconino County, Arizona. It was built in 2002, so it is 23 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 2% of them trucks, projected to reach 510 by 2042. The structure is 68 ft (20.7 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBlue Willow Road
CrossesRio De Flag
Location0.1 MI W JCT US 180
RouteCity Street 0
StateArizona
Coordinates35.2317, -111.6635
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating56 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span64 ft (19.5 m)
Deck width38 ft (11.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic510 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Blue Willow Road over Rio De Flag built?

It was built in 2002, making it 23 years old in 2025.

What condition is Blue Willow Road 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 Blue Willow Road over Rio De Flag carry?

About 500 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Blue Willow Road over Rio De Flag?

The structure is 68 ft (20.7 m) long with a longest span of 64 ft (19.5 m) and a deck 38 ft wide.

Who owns Blue Willow Road over Rio De Flag?

It is owned by the City or Municipal Highway Agency.