US Bridges

Fdr 276 over Black River

Fair

Apache County, Arizona · 0.8 MI Ne/O Aspen Cg · Structure no. 030101000003279

Built
1976
49 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
52 ft
2 main spans
Daily traffic
115
2021 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 276 over Black River is a concrete continuous slab carrying Fdr 276 over Black River in Apache County, Arizona. It was built in 1976, so it is 49 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.

It carries about 115 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2040. The structure is 52 ft (15.8 m) long and 16 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesFdr 276
CrossesBlack River
Location0.8 MI Ne/O Aspen Cg
RouteFederal Lands Road 276
CountyApache County
StateArizona
Coordinates33.81126, -109.30664
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.2 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length52 ft (15.8 m)
Longest span25 ft (7.7 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic115 (2021)
Projected traffic150 by 2040
Trucks5%
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$386,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 276 over Black River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Fdr 276 over Black River 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 August 2024.

How much traffic does Fdr 276 over Black River carry?

About 115 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Fdr 276 over Black River?

The structure is 52 ft (15.8 m) long with a longest span of 25 ft (7.7 m) and a deck 16 ft wide.

Who owns Fdr 276 over Black River?

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