US Bridges

Polk ST over Canal

FairPosted for load

Terrebonne Parish, Louisiana · 0041 Log MI from in · Structure no. 025529347904301

Built
1965
60 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
64 ft
3 main spans
Daily traffic
6,018
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Polk ST over Canal is a concrete slab carrying Polk ST over Canal in Terrebonne Parish, Louisiana. It was built in 1965, so it is 60 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 6,018 vehicles a day, projected to reach 6,619 by 2040. The structure is 64 ft (19.5 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesPolk ST
CrossesCanal
Location0041 Log MI from in
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.59257, -90.73457
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.4 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,018 (2020)
Projected traffic6,619 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$246,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Polk ST over Canal built?

It was built in 1965, making it 60 years old in 2025.

What condition is Polk ST over 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 Polk ST over Canal carry?

About 6,018 vehicles per day (2020 count).

How long is Polk ST over Canal?

The structure is 64 ft (19.5 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Polk ST over Canal?

It is owned by the City or Municipal Highway Agency.