US Bridges

LA0317 over Icww @ Bayou Sale

Fair

St. Mary Parish, Louisiana · 6.2 MI S of US 90(LA0317) · Structure no. 035102430200001

Built
1982
43 years old
Condition
Fair
inspected March 2024
Type
Girder and Floorbeam System
Steel
Length
3,725 ft
3 main spans
Daily traffic
2,218
2020 count
Owner
State
State Highway Agency

About this bridge

LA0317 over Icww @ Bayou Sale is a steel girder and floorbeam system carrying LA0317 over Icww @ Bayou Sale in St. Mary Parish, Louisiana. It was built in 1982, so it is 43 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 2,218 vehicles a day, roughly 13% of them trucks, projected to reach 2,439 by 2040. The structure is 3,725 ft (1,135.4 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA0317
CrossesIcww @ Bayou Sale
Location6.2 MI S of US 90(LA0317)
RouteState Highway 317
CountySt. Mary Parish
StateLouisiana
Coordinates29.67694, -91.4755
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+36 approach)
Design loadHS 20
Structure length3,725 ft (1,135.4 m)
Longest span750 ft (228.6 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,218 (2020)
Projected traffic2,439 by 2040
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0317 over Icww @ Bayou Sale built?

It was built in 1982, making it 43 years old in 2025.

What condition is LA0317 over Icww @ Bayou Sale 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 March 2024.

How much traffic does LA0317 over Icww @ Bayou Sale carry?

About 2,218 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is LA0317 over Icww @ Bayou Sale?

The structure is 3,725 ft (1,135.4 m) long with a longest span of 750 ft (228.6 m) and a deck 39 ft wide.

Who owns LA0317 over Icww @ Bayou Sale?

It is owned by the State Highway Agency.