US Bridges

I-17 NB over Willard Springs RD

Good

Coconino County, Arizona · 13.8 MI S JCT I-40 · Structure no. 20167

Built
2018
7 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
11,896
2021 count
Owner
State
State Highway Agency

About this bridge

I-17 NB over Willard Springs RD is a steel stringer/multi-beam or girder carrying I-17 NB over Willard Springs RD in Coconino County, Arizona. It was built in 2018, so it is 7 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 11,896 vehicles a day, roughly 24% of them trucks, projected to reach 11,906 by 2041. The structure is 62 ft (18.9 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-17 NB
CrossesWillard Springs RD
Location13.8 MI S JCT I-40
RouteInterstate 17
CountyCoconino County
StateArizona
Coordinates34.9817, -111.686
Functional classRural Principal Arterial - Interstate

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.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating70 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length62 ft (18.9 m)
Longest span59 ft (18 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,896 (2021)
Projected traffic11,906 by 2041
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-17 NB over Willard Springs RD built?

It was built in 2018, making it 7 years old in 2025.

What condition is I-17 NB over Willard Springs RD 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 November 2024.

How much traffic does I-17 NB over Willard Springs RD carry?

About 11,896 vehicles per day (2021 count), of which roughly 24% are trucks.

How long is I-17 NB over Willard Springs RD?

The structure is 62 ft (18.9 m) long with a longest span of 59 ft (18 m) and a deck 41 ft wide.

Who owns I-17 NB over Willard Springs RD?

It is owned by the State Highway Agency.