US Bridges

LA0108 over Dinde Bayou

Poor

Calcasieu Parish, Louisiana · 1.0 Mi. S. of I - 10 · Structure no. 071008101904252

Built
1945
80 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
720 ft
1 main span
Daily traffic
2,625
2023 count
Owner
State
State Highway Agency

About this bridge

LA0108 over Dinde Bayou is a steel stringer/multi-beam or girder carrying LA0108 over Dinde Bayou in Calcasieu Parish, Louisiana. It was built in 1945, so it is 80 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,625 vehicles a day, roughly 10% of them trucks, projected to reach 2,887 by 2043. The structure is 720 ft (219.5 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0108
CrossesDinde Bayou
Location1.0 Mi. S. of I - 10
RouteState Highway 108
Coordinates30.2015, -93.32553
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, 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 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+17 approach)
Design loadHS 20
Structure length720 ft (219.5 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,625 (2023)
Projected traffic2,887 by 2043
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$2.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0108 over Dinde Bayou built?

It was built in 1945, making it 80 years old in 2025.

What condition is LA0108 over Dinde Bayou in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does LA0108 over Dinde Bayou carry?

About 2,625 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is LA0108 over Dinde Bayou?

The structure is 720 ft (219.5 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns LA0108 over Dinde Bayou?

It is owned by the State Highway Agency.