US Bridges

Fdr 76 over Irons Fork

Good

Polk County, Arkansas · 7.127 MI SW of HWY 270 · Structure no. 080908000001068

Built
1936
89 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
50
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 76 over Irons Fork is a concrete slab carrying Fdr 76 over Irons Fork 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 26 ft (7.9 m) long and 12 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesFdr 76
CrossesIrons Fork
Location7.127 MI SW of HWY 270
RouteFederal Lands Road 76
Coordinates34.66046, -93.96972
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width12 ft (3.7 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 built?

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

What condition is Fdr 76 over Irons Fork in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Fdr 76 over Irons Fork carry?

About 50 vehicles per day (1992 count).

How long is Fdr 76 over Irons Fork?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 12 ft wide.

Who owns Fdr 76 over Irons Fork?

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