US Bridges

Swain Road over W Fork 6MI Creek

Fair

Vernon Parish, Louisiana · Fort Johnson · Structure no. DAPFORPOK0LWC54

Built
2007
18 years old
Condition
Fair
inspected August 2024
Type
Arch - Deck
Steel
Length
31 ft
1 main span
Daily traffic
336
2016 count
Owner
Federal
Army

About this bridge

Swain Road over W Fork 6MI Creek is a steel arch - deck carrying Swain Road over W Fork 6MI Creek in Vernon Parish, Louisiana. It was built in 2007, so it is 18 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.

It carries about 336 vehicles a day, roughly 10% of them trucks, projected to reach 350 by 2046. The structure is 31 ft (9.5 m) long and 84 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesSwain Road
CrossesW Fork 6MI Creek
LocationFort Johnson
CountyVernon Parish
StateLouisiana
Coordinates31.05777, -93.01579
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
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating86.4 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.5 m)
Longest span31 ft (9.5 m)
Deck width84 ft (25.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic336 (2016)
Projected traffic350 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Swain Road over W Fork 6MI Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Swain Road over W Fork 6MI 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 August 2024.

How much traffic does Swain Road over W Fork 6MI Creek carry?

About 336 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Swain Road over W Fork 6MI Creek?

The structure is 31 ft (9.5 m) long with a longest span of 31 ft (9.5 m) and a deck 84 ft wide.

Who owns Swain Road over W Fork 6MI Creek?

It is owned by the Army.