US Bridges

LA0082 over Mermentau R./G.Chenier

PoorPosted for load

Cameron Parish, Louisiana · 8.25 Mi. S of Int LA1143 · Structure no. 071201940200001

Built
1959
66 years old
Condition
Poor
inspected April 2024
Type
Movable - Swing
Steel
Length
1,049 ft
1 main span
Daily traffic
2,899
2021 count
Owner
State
State Highway Agency

About this bridge

LA0082 over Mermentau R./G.Chenier is a steel movable - swing carrying LA0082 over Mermentau R./G.Chenier in Cameron Parish, Louisiana. It was built in 1959, so it is 66 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. Its operating status is: posted for load restriction.

It carries about 2,899 vehicles a day, roughly 17% of them trucks, projected to reach 3,188 by 2041. The structure is 1,049 ft (319.7 m) long and 29 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesLA0082
CrossesMermentau R./G.Chenier
Location8.25 Mi. S of Int LA1143
RouteState Highway 82
CountyCameron Parish
StateLouisiana
Coordinates29.77046, -93.0145
Functional classRural Major Collector

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.2 US tons
Inventory rating13.2 US tons

Structure

Structure typeMovable - Swing
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+34 approach)
Design loadH 15
Structure length1,049 ft (319.7 m)
Longest span204 ft (62.2 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic2,899 (2021)
Projected traffic3,188 by 2041
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.1 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0082 over Mermentau R./G.Chenier built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0082 over Mermentau R./G.Chenier 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 April 2024.

How much traffic does LA0082 over Mermentau R./G.Chenier carry?

About 2,899 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is LA0082 over Mermentau R./G.Chenier?

The structure is 1,049 ft (319.7 m) long with a longest span of 204 ft (62.2 m) and a deck 29 ft wide.

Who owns LA0082 over Mermentau R./G.Chenier?

It is owned by the State Highway Agency.