US Bridges

LA1126 over Grand Marias Bayou

Fair

Jefferson Davis Parish, Louisiana · 2.7 MI E of LA 382 · Structure no. 072700000070212

Built
2011
14 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
507
2021 count
Owner
State
State Highway Agency

About this bridge

LA1126 over Grand Marias Bayou is a concrete slab carrying LA1126 over Grand Marias Bayou in Jefferson Davis Parish, Louisiana. It was built in 2011, so it is 14 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 507 vehicles a day, roughly 17% of them trucks, projected to reach 557 by 2041. The structure is 76 ft (23.2 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLA1126
CrossesGrand Marias Bayou
Location2.7 MI E of LA 382
RouteState Highway 1126
CountyJefferson Davis Parish
StateLouisiana
Coordinates30.18713, -92.7286
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
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating32.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.6 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic507 (2021)
Projected traffic557 by 2041
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 LA1126 over Grand Marias Bayou built?

It was built in 2011, making it 14 years old in 2025.

What condition is LA1126 over Grand Marias 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 October 2024.

How much traffic does LA1126 over Grand Marias Bayou carry?

About 507 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is LA1126 over Grand Marias Bayou?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA1126 over Grand Marias Bayou?

It is owned by the State Highway Agency.