US Bridges

SR 75 over Rocky John Canyon

Fair

Greenlee County, Arizona · 5.0 MI South JCT US 191 · Structure no. 04363

Built
1967
58 years old
Condition
Fair
inspected August 2021
Type
Culvert
Concrete Continuous
Length
55 ft
5 main spans
Daily traffic
2,154
2015 count
Owner
State
State Highway Agency

About this bridge

SR 75 over Rocky John Canyon is a concrete continuous culvert carrying SR 75 over Rocky John Canyon in Greenlee County, Arizona. It was built in 1967, so it is 58 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 2,154 vehicles a day, roughly 15% of them trucks, projected to reach 2,164 by 2035. The structure is 55 ft (16.8 m) long. If it were closed, the detour would be 52.8 mi (85 km).

Location

Open in Google Maps
CarriesSR 75
CrossesRocky John Canyon
Location5.0 MI South JCT US 191
RouteState Highway 75
CountyGreenlee County
StateArizona
Coordinates32.8913, -109.1976
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2021
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
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,154 (2015)
Projected traffic2,164 by 2035
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.8 mi (85 km)
TollOn a free road
National Highway SystemNo

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 SR 75 over Rocky John Canyon built?

It was built in 1967, making it 58 years old in 2025.

What condition is SR 75 over Rocky John 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 2021.

How much traffic does SR 75 over Rocky John Canyon carry?

About 2,154 vehicles per day (2015 count), of which roughly 15% are trucks.

How long is SR 75 over Rocky John Canyon?

The structure is 55 ft (16.8 m) long with a longest span of 10 ft (3 m).

Who owns SR 75 over Rocky John Canyon?

It is owned by the State Highway Agency.