US Bridges

LA0588 over Blade Bayou

Fair

West Carroll Parish, Louisiana · 0.92 MI W of LA 17 · Structure no. 056208622100921

Built
1983
42 years old
Condition
Fair
inspected February 2023
Type
Culvert
Steel
Length
29 ft
3 main spans
Daily traffic
345
2021 count
Owner
State
State Highway Agency

About this bridge

LA0588 over Blade Bayou is a steel culvert carrying LA0588 over Blade Bayou in West Carroll Parish, Louisiana. It was built in 1983, so it is 42 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 345 vehicles a day, roughly 19% of them trucks, projected to reach 379 by 2041. The structure is 29 ft (8.8 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0588
CrossesBlade Bayou
Location0.92 MI W of LA 17
RouteState Highway 588
CountyWest Carroll Parish
StateLouisiana
Coordinates32.73936, -91.4467
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span7 ft (2.1 m)
Deck width70 ft (21.3 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic345 (2021)
Projected traffic379 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 LA0588 over Blade Bayou built?

It was built in 1983, making it 42 years old in 2025.

What condition is LA0588 over Blade 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 February 2023.

How much traffic does LA0588 over Blade Bayou carry?

About 345 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0588 over Blade Bayou?

The structure is 29 ft (8.8 m) long with a longest span of 7 ft (2.1 m) and a deck 70 ft wide.

Who owns LA0588 over Blade Bayou?

It is owned by the State Highway Agency.