US Bridges

LA0106 over Boggy Bayou

Fair

Evangeline Parish, Louisiana · 6.47 MI West of LA 10 · Structure no. 032002040106471

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
180 ft
9 main spans
Daily traffic
1,247
2021 count
Owner
State
State Highway Agency

About this bridge

LA0106 over Boggy Bayou is a concrete slab carrying LA0106 over Boggy Bayou in Evangeline 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 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 1,247 vehicles a day, roughly 13% of them trucks, projected to reach 1,371 by 2041. The structure is 180 ft (54.9 m) long and 29 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesLA0106
CrossesBoggy Bayou
Location6.47 MI West of LA 10
RouteState Highway 106
CountyEvangeline Parish
StateLouisiana
Coordinates30.78114, -92.468
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,247 (2021)
Projected traffic1,371 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 LA0106 over Boggy Bayou built?

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

What condition is LA0106 over Boggy 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 June 2023.

How much traffic does LA0106 over Boggy Bayou carry?

About 1,247 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0106 over Boggy Bayou?

The structure is 180 ft (54.9 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA0106 over Boggy Bayou?

It is owned by the State Highway Agency.