US Bridges

Fdr 504 over Daze Canyon

Fair

Navajo County, Arizona · 0.72 MI Nw/O FSR 153 Int. · Structure no. 030102000003203

Built
1953
72 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
29 ft
1 main span
Daily traffic
70
2022 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 504 over Daze Canyon is a concrete slab carrying Fdr 504 over Daze Canyon in Navajo County, Arizona. It was built in 1953, so it is 72 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 70 vehicles a day, projected to reach 99 by 2040. The structure is 29 ft (8.8 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesFdr 504
CrossesDaze Canyon
Location0.72 MI Nw/O FSR 153 Int.
RouteFederal Lands Road 504
CountyNavajo County
StateArizona
Coordinates34.53581, -110.71952
Functional classRural Local

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.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.6 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span28 ft (8.6 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2022)
Projected traffic99 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$71,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 504 over Daze Canyon built?

It was built in 1953, making it 72 years old in 2025.

What condition is Fdr 504 over Daze Canyon 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 Fdr 504 over Daze Canyon carry?

About 70 vehicles per day (2022 count).

How long is Fdr 504 over Daze Canyon?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.6 m) and a deck 16 ft wide.

Who owns Fdr 504 over Daze Canyon?

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