US Bridges

LA0120 over Bayou Scie Relief 2

PoorPosted for load

Sabine Parish, Louisiana · 3.5 MI East of US 171 · Structure no. 084300420304411

Built
1960
65 years old
Condition
Poor
inspected September 2024
Type
Slab
Concrete
Length
78 ft
4 main spans
Daily traffic
235
2021 count
Owner
State
State Highway Agency

About this bridge

LA0120 over Bayou Scie Relief 2 is a concrete slab carrying LA0120 over Bayou Scie Relief 2 in Sabine Parish, Louisiana. It was built in 1960, so it is 65 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 235 vehicles a day, roughly 14% of them trucks, projected to reach 258 by 2041. The structure is 78 ft (23.8 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesLA0120
CrossesBayou Scie Relief 2
Location3.5 MI East of US 171
RouteState Highway 120
Coordinates31.67049, -93.5897
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating19.3 US tons
Inventory rating15 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadH 15
Structure length78 ft (23.8 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.4 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
CrossesRelief for waterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0120 over Bayou Scie Relief 2 built?

It was built in 1960, making it 65 years old in 2025.

What condition is LA0120 over Bayou Scie Relief 2 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does LA0120 over Bayou Scie Relief 2 carry?

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

How long is LA0120 over Bayou Scie Relief 2?

The structure is 78 ft (23.8 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns LA0120 over Bayou Scie Relief 2?

It is owned by the State Highway Agency.