US Bridges

ST Louis Canal RD over ST Louis Canal

Fair

Terrebonne Parish, Louisiana · 2.3 MI N of LA 3040 · Structure no. 025529384904441

Built
1976
49 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
96 ft
5 main spans
Daily traffic
3,492
2022 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 3,492 vehicles a day, projected to reach 3,841 by 2042. The structure is 96 ft (29.3 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesST Louis Canal RD
CrossesST Louis Canal
Location2.3 MI N of LA 3040
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.63992, -90.74012
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to 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 loadH 10
Structure length96 ft (29.3 m)
Longest span19 ft (5.8 m)
Deck width22 ft (6.8 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,492 (2022)
Projected traffic3,841 by 2042
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 statusHistorical significance not determinable at this time
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 3,492 vehicles per day (2022 count).

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

The structure is 96 ft (29.3 m) long with a longest span of 19 ft (5.8 m) and a deck 22 ft wide.

Who owns ST Louis Canal RD over ST Louis Canal?

It is owned by the County Highway Agency.