US Bridges

IRR BIA RTE 61 over Diamond Creek

FairPosted for load

Apache County, Arizona · 16.5 KM NE of HWY 73 · Structure no. 00000000000H081

Built
1975
50 years old
Condition
Fair
inspected February 2024
Type
Girder and Floorbeam System
Steel
Length
29 ft
1 main span
Daily traffic
30
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 61 over Diamond Creek is a steel girder and floorbeam system carrying IRR BIA RTE 61 over Diamond Creek in Apache County, Arizona. It was built in 1975, so it is 50 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 5 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 30 vehicles a day, roughly 5% of them trucks, projected to reach 35 by 2044. The structure is 29 ft (8.8 m) long and 20 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesIRR BIA RTE 61
CrossesDiamond Creek
Location16.5 KM NE of HWY 73
RouteFederal Lands Road 61
CountyApache County
StateArizona
Coordinates33.91778, -109.83136
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating24.6 US tons
Inventory rating17.7 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span26 ft (7.8 m)
Deck width20 ft (6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic35 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE 61 over Diamond Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is IRR BIA RTE 61 over Diamond 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 February 2024.

How much traffic does IRR BIA RTE 61 over Diamond Creek carry?

About 30 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 61 over Diamond Creek?

The structure is 29 ft (8.8 m) long with a longest span of 26 ft (7.8 m) and a deck 20 ft wide.

Who owns IRR BIA RTE 61 over Diamond Creek?

It is owned by the Bureau of Indian Affairs.