US Bridges

I-17 NB over Cienega Creek

Fair

Yavapai County, Arizona · 0.5 MI S JCT SR 169 · Structure no. 00428

Built
1955
70 years old, rebuilt 1976
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
147 ft
3 main spans
Daily traffic
13,664
2023 count
Owner
State
State Highway Agency

About this bridge

I-17 NB over Cienega Creek is a steel continuous stringer/multi-beam or girder carrying I-17 NB over Cienega Creek in Yavapai County, Arizona. It was built in 1955 and reconstructed in 1976, so it is 70 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 5 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 13,664 vehicles a day, roughly 18% of them trucks, projected to reach 13,674 by 2042. The structure is 147 ft (44.8 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
CrossesCienega Creek
Location0.5 MI S JCT SR 169
RouteInterstate 17
CountyYavapai County
StateArizona
Coordinates34.5084, -111.9963
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length147 ft (44.8 m)
Longest span54 ft (16.5 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,664 (2023)
Projected traffic13,674 by 2042
Trucks18%
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 Cienega Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1976.

What condition is I-17 NB over Cienega Creek 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 Cienega Creek carry?

About 13,664 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is I-17 NB over Cienega Creek?

The structure is 147 ft (44.8 m) long with a longest span of 54 ft (16.5 m) and a deck 45 ft wide.

Who owns I-17 NB over Cienega Creek?

It is owned by the State Highway Agency.