US Bridges

LA3127 over Saint James Canal

Fair

St. James Parish, Louisiana · 4.6 M East of LA 70&3127 · Structure no. 614704280104551

Built
1988
37 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
41 ft
3 main spans
Daily traffic
6,703
2021 count
Owner
State
State Highway Agency

About this bridge

LA3127 over Saint James Canal is a steel culvert carrying LA3127 over Saint James Canal in St. James Parish, Louisiana. It was built in 1988, so it is 37 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 6,703 vehicles a day, roughly 18% of them trucks, projected to reach 7,373 by 2041. The structure is 41 ft (12.5 m) long and 55 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesLA3127
CrossesSaint James Canal
Location4.6 M East of LA 70&3127
RouteState Highway 3127
CountySt. James Parish
StateLouisiana
Coordinates30.02501, -90.91494
Functional classRural 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating53.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span10 ft (3 m)
Deck width55 ft (16.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,703 (2021)
Projected traffic7,373 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 LA3127 over Saint James Canal built?

It was built in 1988, making it 37 years old in 2025.

What condition is LA3127 over Saint James 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 September 2024.

How much traffic does LA3127 over Saint James Canal carry?

About 6,703 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is LA3127 over Saint James Canal?

The structure is 41 ft (12.5 m) long with a longest span of 10 ft (3 m) and a deck 55 ft wide.

Who owns LA3127 over Saint James Canal?

It is owned by the State Highway Agency.