US Bridges

Moon Canyon Ave over Storm Drain

PoorPosted for load

Cochise County, Arizona · E JCT Tombstone Canyon · Structure no. 10538

Built
1900
125 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
300
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Moon Canyon Ave over Storm Drain is a concrete slab carrying Moon Canyon Ave over Storm Drain in Cochise County, Arizona. It was built in 1900, so it is 125 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 300 vehicles a day, projected to reach 310 by 2041. The structure is 23 ft (7 m) long and 21 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesMoon Canyon Ave
CrossesStorm Drain
LocationE JCT Tombstone Canyon
RouteCity Street 0
CountyCochise County
StateArizona
Coordinates31.4483, -109.9286
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck17 ft (5.3 m)

Traffic and service

Average daily traffic300 (2021)
Projected traffic310 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Moon Canyon Ave over Storm Drain built?

It was built in 1900, making it 125 years old in 2025.

What condition is Moon Canyon Ave over Storm Drain in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Moon Canyon Ave over Storm Drain carry?

About 300 vehicles per day (2021 count).

How long is Moon Canyon Ave over Storm Drain?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 21 ft wide.

Who owns Moon Canyon Ave over Storm Drain?

It is owned by the City or Municipal Highway Agency.