US Bridges

LA1172 over Bayou

FairPosted for load

Evangeline Parish, Louisiana · 3.0 MI East of LA 13 · Structure no. 032008200604981

Built
1966
59 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
78 ft
4 main spans
Daily traffic
704
2021 count
Owner
State
State Highway Agency

About this bridge

LA1172 over Bayou is a wood or timber stringer/multi-beam or girder carrying LA1172 over Bayou in Evangeline Parish, Louisiana. It was built in 1966, so it is 59 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 704 vehicles a day, roughly 12% of them trucks, projected to reach 774 by 2041. The structure is 78 ft (23.8 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLA1172
CrossesBayou
Location3.0 MI East of LA 13
RouteState Highway 1172
Coordinates30.74369, -92.4024
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26 US tons
Inventory rating17 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 15
Structure length78 ft (23.8 m)
Longest span19 ft (5.8 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic704 (2021)
Projected traffic774 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 LA1172 over Bayou built?

It was built in 1966, making it 59 years old in 2025.

What condition is LA1172 over Bayou 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 2023.

How much traffic does LA1172 over Bayou carry?

About 704 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA1172 over Bayou?

The structure is 78 ft (23.8 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.

Who owns LA1172 over Bayou?

It is owned by the State Highway Agency.