US Bridges

Atv Trail over Mack Bayou

FairPosted for load

Madison Parish, Louisiana · Mack Bayou (north) · Structure no. 000043690-00020

Built
1986
39 years old
Condition
Fair
inspected October 2023
Type
Girder and Floorbeam System
Steel
Length
54 ft
2 main spans
Daily traffic
2
2023 count
Owner
Federal
Bureau of Fish and Wildlife

About this bridge

Atv Trail over Mack Bayou is a steel girder and floorbeam system carrying Atv Trail over Mack Bayou in Madison Parish, Louisiana. It was built in 1986, so it is 39 years old, younger than the Louisiana average of 43 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 2 vehicles a day, projected to reach 5 by 2043. The structure is 54 ft (16.5 m) long and 10 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesAtv Trail
CrossesMack Bayou
LocationMack Bayou (north)
RouteFederal Lands Road 0
CountyMadison Parish
StateLouisiana
Coordinates32.2585, -91.34
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19 US tons
Inventory rating11 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckOpen grating
Main spans2
Design loadUnknown
Structure length54 ft (16.5 m)
Longest span26 ft (7.9 m)
Deck width10 ft (3.1 m)
Roadway width10 ft (3 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic2 (2023)
Projected traffic5 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Fish and Wildlife
Maintained byBureau of Fish and Wildlife
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 Atv Trail over Mack Bayou built?

It was built in 1986, making it 39 years old in 2025.

What condition is Atv Trail over Mack Bayou 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 2023.

How much traffic does Atv Trail over Mack Bayou carry?

About 2 vehicles per day (2023 count).

How long is Atv Trail over Mack Bayou?

The structure is 54 ft (16.5 m) long with a longest span of 26 ft (7.9 m) and a deck 10 ft wide.

Who owns Atv Trail over Mack Bayou?

It is owned by the Bureau of Fish and Wildlife.