US Bridges

LA0569 over Bayou L-Argent

FairPosted for load

Tensas Parish, Louisiana · 1.21 MI South of LA 568 · Structure no. 585401760300001

Built
1954
71 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
96 ft
3 main spans
Daily traffic
105
2021 count
Owner
State
State Highway Agency

About this bridge

LA0569 over Bayou L-Argent is a wood or timber stringer/multi-beam or girder carrying LA0569 over Bayou L-Argent in Tensas Parish, Louisiana. It was built in 1954, so it is 71 years old, older 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 105 vehicles a day, roughly 15% of them trucks, projected to reach 115 by 2041. The structure is 96 ft (29.3 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLA0569
CrossesBayou L-Argent
Location1.21 MI South of LA 568
RouteState Highway 569
CountyTensas Parish
StateLouisiana
Coordinates31.75362, -91.4174
Functional classRural Minor Collector

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating25 US tons
Inventory rating17 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length96 ft (29.3 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105 (2021)
Projected traffic115 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 LA0569 over Bayou L-Argent built?

It was built in 1954, making it 71 years old in 2025.

What condition is LA0569 over Bayou L-Argent 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 July 2024.

How much traffic does LA0569 over Bayou L-Argent carry?

About 105 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0569 over Bayou L-Argent?

The structure is 96 ft (29.3 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns LA0569 over Bayou L-Argent?

It is owned by the State Highway Agency.