US Bridges

I 17; NB over Woods Canyon

Fair

Coconino County, Arizona · 18.0 MI North JCT SR 179 · Structure no. 00617

Built
1958
67 years old, rebuilt 1987
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
178 ft
3 main spans
Daily traffic
11,754
2022 count
Owner
State
State Highway Agency

About this bridge

I 17; NB over Woods Canyon is a steel continuous stringer/multi-beam or girder carrying I 17; NB over Woods Canyon in Coconino County, Arizona. It was built in 1958 and reconstructed in 1987, so it is 67 years old, older 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 11,754 vehicles a day, roughly 17% of them trucks, projected to reach 11,764 by 2042. The structure is 178 ft (54.3 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 17; NB
CrossesWoods Canyon
Location18.0 MI North JCT SR 179
RouteInterstate 17
CountyCoconino County
StateArizona
Coordinates34.8653, -111.6264
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length178 ft (54.3 m)
Longest span67 ft (20.4 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,754 (2022)
Projected traffic11,764 by 2042
Trucks17%
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 I 17; NB over Woods Canyon built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1987.

What condition is I 17; NB over Woods Canyon 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 August 2023.

How much traffic does I 17; NB over Woods Canyon carry?

About 11,754 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is I 17; NB over Woods Canyon?

The structure is 178 ft (54.3 m) long with a longest span of 67 ft (20.4 m) and a deck 45 ft wide.

Who owns I 17; NB over Woods Canyon?

It is owned by the State Highway Agency.