US Bridges

Fdr 504 over West Chevelon Creek

FairPosted for load

Coconino County, Arizona · 1.5 MI S/O RD 191 Int · Structure no. 030102000003292

Built
1951
74 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
112 ft
4 main spans
Daily traffic
70
2021 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 504 over West Chevelon Creek is a steel continuous stringer/multi-beam or girder carrying Fdr 504 over West Chevelon Creek in Coconino County, Arizona. It was built in 1951, so it is 74 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. Its operating status is: posted for load restriction.

It carries about 70 vehicles a day, projected to reach 99 by 2040. The structure is 112 ft (34.1 m) long and 15 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesFdr 504
CrossesWest Chevelon Creek
Location1.5 MI S/O RD 191 Int
RouteFederal Lands Road 504
CountyCoconino County
StateArizona
Coordinates34.61712, -110.78741
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating17.5 US tons
Inventory rating13.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length112 ft (34.1 m)
Longest span28 ft (8.5 m)
Deck width15 ft (4.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2021)
Projected traffic99 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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$722,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 504 over West Chevelon Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is Fdr 504 over West Chevelon Creek 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 West Chevelon Creek carry?

About 70 vehicles per day (2021 count).

How long is Fdr 504 over West Chevelon Creek?

The structure is 112 ft (34.1 m) long with a longest span of 28 ft (8.5 m) and a deck 15 ft wide.

Who owns Fdr 504 over West Chevelon Creek?

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