US Bridges

LA0674 over Commercial Canal

Fair

Iberia Parish, Louisiana · 1.0M South of LA 14 · Structure no. 032308232907581

Built
1991
34 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
40 ft
2 main spans
Daily traffic
8,040
2021 count
Owner
State
State Highway Agency

About this bridge

LA0674 over Commercial Canal is a concrete slab carrying LA0674 over Commercial Canal in Iberia Parish, Louisiana. It was built in 1991, so it is 34 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 6 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 8,040 vehicles a day, roughly 9% of them trucks, projected to reach 8,844 by 2041. The structure is 40 ft (12.2 m) long and 73 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLA0674
CrossesCommercial Canal
Location1.0M South of LA 14
RouteState Highway 674
CountyIberia Parish
StateLouisiana
Coordinates29.98721, -91.82395
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span20 ft (6.1 m)
Deck width73 ft (22.2 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,040 (2021)
Projected traffic8,844 by 2041
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 LA0674 over Commercial Canal built?

It was built in 1991, making it 34 years old in 2025.

What condition is LA0674 over Commercial 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 August 2023.

How much traffic does LA0674 over Commercial Canal carry?

About 8,040 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA0674 over Commercial Canal?

The structure is 40 ft (12.2 m) long with a longest span of 20 ft (6.1 m) and a deck 73 ft wide.

Who owns LA0674 over Commercial Canal?

It is owned by the State Highway Agency.