SR 177 over US 60

Fair

Pinal County, Arizona · JCT US 60 · Structure no. 00438

Built: 1955; 70 years old
Condition: Fair; inspected February 2024
Type: Slab; Concrete Continuous
Length: 99 ft; 3 main spans
Daily traffic: 6,543; 2022 count
Owner: State; State Highway Agency

About this bridge

SR 177 over US 60 is a concrete continuous slab carrying SR 177 over US 60 in Pinal County, Arizona. It was built in 1955, so it is 70 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 6,543 vehicles a day, roughly 14% of them trucks, projected to reach 6,553 by 2042. The structure is 99 ft (30.2 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 177

CrossesUS 60

LocationJCT US 60

RouteState Highway 177

CountyPinal County

StateArizona

Coordinates33.2908, -111.0967

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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	7 Good	Some minor problems.

Last inspectionFebruary 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation6: Equal to present minimum criteria

Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

Approach roadway alignment6: Equal to present minimum criteria

Operating rating52 US tons

Inventory rating31 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length99 ft (30.2 m)

Longest span47 ft (14.3 m)

Deck width52 ft (15.7 m)

Roadway width43 ft (13.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,543 (2022)

Projected traffic6,553 by 2042

Trucks14%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesHighway

Detour if closed1.2 mi (2 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—

NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 177 over US 60 built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR 177 over US 60 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 February 2024.

How much traffic does SR 177 over US 60 carry?

About 6,543 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is SR 177 over US 60?

The structure is 99 ft (30.2 m) long with a longest span of 47 ft (14.3 m) and a deck 52 ft wide.

Who owns SR 177 over US 60?

It is owned by the State Highway Agency.