US Bridges

Bayou Gardens Blvd over Bayou

FairPosted for load

Terrebonne Parish, Louisiana · 0.4 MI W of LA 660 · Structure no. 025529389904411

Built
1969
56 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
316
2020 count
Owner
County
County Highway Agency

About this bridge

Bayou Gardens Blvd over Bayou is a concrete slab carrying Bayou Gardens Blvd over Bayou in Terrebonne Parish, Louisiana. It was built in 1969, so it is 56 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 316 vehicles a day, projected to reach 347 by 2040. The structure is 76 ft (23.2 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesBayou Gardens Blvd
CrossesBayou
Location0.4 MI W of LA 660
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.64793, -90.73558
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 protection7 GoodSome minor problems.
Last inspectionMay 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20.7 US tons
Inventory rating16.1 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 width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic316 (2020)
Projected traffic347 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$274,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bayou Gardens Blvd over Bayou built?

It was built in 1969, making it 56 years old in 2025.

What condition is Bayou Gardens Blvd over 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 May 2023.

How much traffic does Bayou Gardens Blvd over Bayou carry?

About 316 vehicles per day (2020 count).

How long is Bayou Gardens Blvd over Bayou?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns Bayou Gardens Blvd over Bayou?

It is owned by the County Highway Agency.