US Bridges

IRR SR 73 over Amos Wash

Fair

Gila County, Arizona · 17.1 MI E JCT US 60 · Structure no. 06047

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete Continuous
Length
64 ft
5 main spans
Daily traffic
1,247
2022 count
Owner
State
State Highway Agency

About this bridge

IRR SR 73 over Amos Wash is a concrete continuous culvert carrying IRR SR 73 over Amos Wash in Gila County, Arizona. It was built in 1971, so it is 54 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 1,247 vehicles a day, roughly 32% of them trucks, projected to reach 1,257 by 2042. The structure is 64 ft (19.5 m) long. If it were closed, the detour would be 42.9 mi (69 km).

Location

Open in Google Maps
CarriesIRR SR 73
CrossesAmos Wash
Location17.1 MI E JCT US 60
RouteState Highway 73
CountyGila County
StateArizona
Coordinates33.80781, -110.12561
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 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 inspectionOctober 2024
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 alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length64 ft (19.5 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 traffic1,247 (2022)
Projected traffic1,257 by 2042
Trucks32%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.9 mi (69 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 IRR SR 73 over Amos Wash built?

It was built in 1971, making it 54 years old in 2025.

What condition is IRR SR 73 over Amos Wash 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 October 2024.

How much traffic does IRR SR 73 over Amos Wash carry?

About 1,247 vehicles per day (2022 count), of which roughly 32% are trucks.

How long is IRR SR 73 over Amos Wash?

The structure is 64 ft (19.5 m) long with a longest span of 10 ft (3 m).

Who owns IRR SR 73 over Amos Wash?

It is owned by the State Highway Agency.