US Bridges

Fdr 99 over Wildcat Canyon

Good

Navajo County, Arizona · 1.4 MI W/O Nelson RD Int · Structure no. 030102000003296

Built
1952
73 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
60
2021 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 99 over Wildcat Canyon is a steel stringer/multi-beam or girder carrying Fdr 99 over Wildcat Canyon in Navajo County, Arizona. It was built in 1952, so it is 73 years old, older 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.

It carries about 60 vehicles a day, projected to reach 90 by 2040. The structure is 52 ft (15.8 m) long and 24 ft wide. If it were closed, the detour would be 54.7 mi (88 km).

CarriesFdr 99
CrossesWildcat Canyon
Location1.4 MI W/O Nelson RD Int
RouteFederal Lands Road 99
StateArizona
Coordinates34.44887, -110.76617
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.1 US tons
Inventory rating28.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2021)
Projected traffic90 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed54.7 mi (88 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$358,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 99 over Wildcat Canyon built?

It was built in 1952, making it 73 years old in 2025.

What condition is Fdr 99 over Wildcat Canyon 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 October 2024.

How much traffic does Fdr 99 over Wildcat Canyon carry?

About 60 vehicles per day (2021 count).

How long is Fdr 99 over Wildcat Canyon?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns Fdr 99 over Wildcat Canyon?

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