US Bridges

LA0676 over Deblanc Coulee

FairPosted for load

Iberia Parish, Louisiana · 1.5 MI West of LA 14 · Structure no. 032308230701181

Built
1942
83 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
77 ft
4 main spans
Daily traffic
553
2021 count
Owner
State
State Highway Agency

About this bridge

LA0676 over Deblanc Coulee is a wood or timber stringer/multi-beam or girder carrying LA0676 over Deblanc Coulee in Iberia Parish, Louisiana. It was built in 1942, so it is 83 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 553 vehicles a day, roughly 15% of them trucks, projected to reach 608 by 2041. The structure is 77 ft (23.5 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0676
CrossesDeblanc Coulee
Location1.5 MI West of LA 14
RouteState Highway 676
CountyIberia Parish
StateLouisiana
Coordinates29.98291, -91.9138
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 inspectionAugust 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.1 US tons
Inventory rating15 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 10
Structure length77 ft (23.5 m)
Longest span19 ft (5.8 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic553 (2021)
Projected traffic608 by 2041
Trucks15%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$397,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0676 over Deblanc Coulee built?

It was built in 1942, making it 83 years old in 2025.

What condition is LA0676 over Deblanc Coulee 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 LA0676 over Deblanc Coulee carry?

About 553 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0676 over Deblanc Coulee?

The structure is 77 ft (23.5 m) long with a longest span of 19 ft (5.8 m) and a deck 20 ft wide.

Who owns LA0676 over Deblanc Coulee?

It is owned by the State Highway Agency.