US Bridges

LA0120 over Bayou Scie

Fair

Sabine Parish, Louisiana · 6.54 Mi. East of US 171 · Structure no. 084300420307441

Built
1959
66 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
235
2021 count
Owner
State
State Highway Agency

About this bridge

LA0120 over Bayou Scie is a concrete slab carrying LA0120 over Bayou Scie in Sabine Parish, Louisiana. It was built in 1959, so it is 66 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 235 vehicles a day, roughly 14% of them trucks, projected to reach 258 by 2041. The structure is 120 ft (36.6 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLA0120
CrossesBayou Scie
Location6.54 Mi. East of US 171
RouteState Highway 120
CountySabine Parish
StateLouisiana
Coordinates31.68007, -93.5414
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic235 (2021)
Projected traffic258 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 LA0120 over Bayou Scie built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0120 over Bayou Scie 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 LA0120 over Bayou Scie carry?

About 235 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0120 over Bayou Scie?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0120 over Bayou Scie?

It is owned by the State Highway Agency.