US Bridges

ST Louis Canal RD over ST Louis Canal

Fair

Terrebonne Parish, Louisiana · 0166 Log MI from in · Structure no. 025529379904411

Built
1976
49 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
6,313
2020 count
Owner
County
County Highway Agency

About this bridge

ST Louis Canal RD over ST Louis Canal is a concrete slab carrying ST Louis Canal RD over ST Louis Canal in Terrebonne Parish, Louisiana. It was built in 1976, so it is 49 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 6,313 vehicles a day, projected to reach 6,944 by 2040. The structure is 95 ft (29 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesST Louis Canal RD
CrossesST Louis Canal
Location0166 Log MI from in
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.63167, -90.735
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,313 (2020)
Projected traffic6,944 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 ST Louis Canal RD over ST Louis Canal built?

It was built in 1976, making it 49 years old in 2025.

What condition is ST Louis Canal RD over ST Louis Canal 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 ST Louis Canal RD over ST Louis Canal carry?

About 6,313 vehicles per day (2020 count).

How long is ST Louis Canal RD over ST Louis Canal?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns ST Louis Canal RD over ST Louis Canal?

It is owned by the County Highway Agency.