US Bridges

LA3187 over Thibs Cut

Fair

Evangeline Parish, Louisiana · 1.5 MI NW JCT LA 13 · Structure no. 032008204301441

Built
1984
41 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
30 ft
2 main spans
Daily traffic
89
2021 count
Owner
State
State Highway Agency

About this bridge

LA3187 over Thibs Cut is a wood or timber stringer/multi-beam or girder carrying LA3187 over Thibs Cut in Evangeline Parish, Louisiana. It was built in 1984, so it is 41 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 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 89 vehicles a day, roughly 15% of them trucks, projected to reach 97 by 2041. The structure is 30 ft (9.1 m) long and 26 ft wide.

CarriesLA3187
CrossesThibs Cut
Location1.5 MI NW JCT LA 13
RouteState Highway 3187
Coordinates30.79879, -92.44069
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating22 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span15 ft (4.6 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89 (2021)
Projected traffic97 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 LA3187 over Thibs Cut built?

It was built in 1984, making it 41 years old in 2025.

What condition is LA3187 over Thibs Cut 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 May 2024.

How much traffic does LA3187 over Thibs Cut carry?

About 89 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA3187 over Thibs Cut?

The structure is 30 ft (9.1 m) long with a longest span of 15 ft (4.6 m) and a deck 26 ft wide.

Who owns LA3187 over Thibs Cut?

It is owned by the State Highway Agency.