US Bridges

I 17; SB over Rattlesnake Cnyn

Fair

Yavapai County, Arizona · 44.2 MI N JCT SR 69 · Structure no. 06561

Built
1975
50 years old
Condition
Fair
inspected August 2022
Type
Culvert
Steel
Length
33 ft
2 main spans
Daily traffic
19,432
2021 count
Owner
State
State Highway Agency

About this bridge

I 17; SB over Rattlesnake Cnyn is a steel culvert carrying I 17; SB over Rattlesnake Cnyn in Yavapai County, Arizona. It was built in 1975, so it is 50 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 19,432 vehicles a day, roughly 24% of them trucks, projected to reach 19,442 by 2041. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesI 17; SB
CrossesRattlesnake Cnyn
Location44.2 MI N JCT SR 69
RouteInterstate 17
CountyYavapai County
StateArizona
Coordinates34.7693, -111.6438
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,432 (2021)
Projected traffic19,442 by 2041
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 17; SB over Rattlesnake Cnyn built?

It was built in 1975, making it 50 years old in 2025.

What condition is I 17; SB over Rattlesnake Cnyn 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 2022.

How much traffic does I 17; SB over Rattlesnake Cnyn carry?

About 19,432 vehicles per day (2021 count), of which roughly 24% are trucks.

How long is I 17; SB over Rattlesnake Cnyn?

The structure is 33 ft (10.1 m) long with a longest span of 12 ft (3.7 m).

Who owns I 17; SB over Rattlesnake Cnyn?

It is owned by the State Highway Agency.