US Bridges

Fdr 76 over Irons Fork Trib

FairPosted for load

Polk County, Arkansas · 9.861 MI SW of HWY 270 · Structure no. 080907000003115

Built
1936
89 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
43 ft
2 main spans
Daily traffic
50
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 76 over Irons Fork Trib is a concrete slab carrying Fdr 76 over Irons Fork Trib in Polk County, Arkansas. It was built in 1936, so it is 89 years old, older than the Arkansas average of 45.1 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 43 ft (13.1 m) long and 13 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesFdr 76
CrossesIrons Fork Trib
Location9.861 MI SW of HWY 270
RouteFederal Lands Road 76
CountyPolk County
StateArkansas
Coordinates34.66034, -93.01285
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19.6 US tons
Inventory rating15.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length43 ft (13.1 m)
Longest span19 ft (5.8 m)
Deck width13 ft (4 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1992)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 76 over Irons Fork Trib built?

It was built in 1936, making it 89 years old in 2025.

What condition is Fdr 76 over Irons Fork Trib 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 January 2025.

How much traffic does Fdr 76 over Irons Fork Trib carry?

About 50 vehicles per day (1992 count).

How long is Fdr 76 over Irons Fork Trib?

The structure is 43 ft (13.1 m) long with a longest span of 19 ft (5.8 m) and a deck 13 ft wide.

Who owns Fdr 76 over Irons Fork Trib?

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