US Bridges

US 60 over Rocky Arroyo

Fair

Navajo County, Arizona · 6.0 MI W JCT SR 61 · Structure no. 00384

Built
1936
89 years old, rebuilt 1952
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
108 ft
3 main spans
Daily traffic
7,792
2022 count
Owner
State
State Highway Agency

About this bridge

US 60 over Rocky Arroyo is a concrete tee beam carrying US 60 over Rocky Arroyo in Navajo County, Arizona. It was built in 1936 and reconstructed in 1952, so it is 89 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 7,792 vehicles a day, roughly 14% of them trucks, projected to reach 7,802 by 2042. The structure is 108 ft (32.9 m) long and 38 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesUS 60
CrossesRocky Arroyo
Location6.0 MI W JCT SR 61
RouteU.S. Route 60
CountyNavajo County
StateArizona
Coordinates34.2684, -109.9373
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span36 ft (11 m)
Deck width38 ft (11.7 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,792 (2022)
Projected traffic7,802 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 60 over Rocky Arroyo built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1952.

What condition is US 60 over Rocky Arroyo 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 US 60 over Rocky Arroyo carry?

About 7,792 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is US 60 over Rocky Arroyo?

The structure is 108 ft (32.9 m) long with a longest span of 36 ft (11 m) and a deck 38 ft wide.

Who owns US 60 over Rocky Arroyo?

It is owned by the State Highway Agency.