US Bridges

Hill ST over Cottonwood ST

Fair

Gila County, Arizona · @ JCT Cottonwood ST · Structure no. 08600

Built
1960
65 years old
Condition
Fair
inspected May 2024
Type
Frame
Concrete
Length
45 ft
1 main span
Daily traffic
3,493
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hill ST over Cottonwood ST is a concrete frame carrying Hill ST over Cottonwood ST in Gila County, Arizona. It was built in 1960, so it is 65 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 3,493 vehicles a day, roughly 5% of them trucks, projected to reach 3,503 by 2041. The structure is 45 ft (13.7 m) long and 55 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHill ST
CrossesCottonwood ST
Location@ JCT Cottonwood ST
RouteCity Street 0
CountyGila County
StateArizona
Coordinates33.3948, -110.7853
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span40 ft (12.2 m)
Deck width55 ft (16.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,493 (2021)
Projected traffic3,503 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hill ST over Cottonwood ST built?

It was built in 1960, making it 65 years old in 2025.

What condition is Hill ST over Cottonwood ST 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 May 2024.

How much traffic does Hill ST over Cottonwood ST carry?

About 3,493 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Hill ST over Cottonwood ST?

The structure is 45 ft (13.7 m) long with a longest span of 40 ft (12.2 m) and a deck 55 ft wide.

Who owns Hill ST over Cottonwood ST?

It is owned by the City or Municipal Highway Agency.