US Bridges

Dama Landry Rd. over Bayou Grand Marais

Fair

Jefferson Davis Parish, Louisiana · 2.3 MI S of LA 395 · Structure no. 072730190924231

Built
1979
46 years old
Condition
Fair
inspected September 2024
Type
Channel Beam
Concrete
Length
81 ft
3 main spans
Daily traffic
90
2019 count
Owner
County
County Highway Agency

About this bridge

Dama Landry Rd. over Bayou Grand Marais is a concrete channel beam carrying Dama Landry Rd. over Bayou Grand Marais in Jefferson Davis Parish, Louisiana. It was built in 1979, so it is 46 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.

It carries about 90 vehicles a day, projected to reach 99 by 2039. The structure is 81 ft (24.7 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDama Landry Rd.
CrossesBayou Grand Marais
Location2.3 MI S of LA 395
RouteCounty Highway 0
CountyJefferson Davis Parish
StateLouisiana
Coordinates30.31671, -92.70547
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
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating26.1 US tons
Inventory rating13.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span27 ft (8.2 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2019)
Projected traffic99 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Dama Landry Rd. over Bayou Grand Marais built?

It was built in 1979, making it 46 years old in 2025.

What condition is Dama Landry Rd. over Bayou Grand Marais 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 September 2024.

How much traffic does Dama Landry Rd. over Bayou Grand Marais carry?

About 90 vehicles per day (2019 count).

How long is Dama Landry Rd. over Bayou Grand Marais?

The structure is 81 ft (24.7 m) long with a longest span of 27 ft (8.2 m) and a deck 22 ft wide.

Who owns Dama Landry Rd. over Bayou Grand Marais?

It is owned by the County Highway Agency.