US Bridges

FSR 487 over Workman Cliff

GoodPosted for load

Gila County, Arizona · 1.3 MI Se/O Workman Ck Cg · Structure no. 031205000014792

Built
1995
30 years old
Condition
Good
inspected August 2023
Type
Orthotropic
Steel
Length
64 ft
16 main spans
Daily traffic
39
2022 count
Owner
Federal
U.S. Forest Service

About this bridge

FSR 487 over Workman Cliff is a steel orthotropic carrying FSR 487 over Workman Cliff in Gila County, Arizona. It was built in 1995, so it is 30 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 39 vehicles a day, projected to reach 99 by 2042. The structure is 64 ft (19.5 m) long and 13 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

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CarriesFSR 487
CrossesWorkman Cliff
Location1.3 MI Se/O Workman Ck Cg
RouteFederal Lands Road 487
CountyGila County
StateArizona
Coordinates33.81954, -110.93131
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating7.8 US tons
Inventory rating6.1 US tons

Structure

Structure typeOrthotropic
MaterialSteel
DeckCorrugated steel
Main spans16
Design loadOther
Structure length64 ft (19.5 m)
Longest span4 ft (1.2 m)
Deck width13 ft (4 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39 (2022)
Projected traffic99 by 2042
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesOther
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FSR 487 over Workman Cliff built?

It was built in 1995, making it 30 years old in 2025.

What condition is FSR 487 over Workman Cliff in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does FSR 487 over Workman Cliff carry?

About 39 vehicles per day (2022 count).

How long is FSR 487 over Workman Cliff?

The structure is 64 ft (19.5 m) long with a longest span of 4 ft (1.2 m) and a deck 13 ft wide.

Who owns FSR 487 over Workman Cliff?

It is owned by the U.S. Forest Service.