US Bridges

LA0042 over Poley Bayou

Fair

Livingston Parish, Louisiana · 0.7 M N of LA 16 · Structure no. 623202610100941

Built
1960
65 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
4,071
2021 count
Owner
State
State Highway Agency

About this bridge

LA0042 over Poley Bayou is a concrete slab carrying LA0042 over Poley Bayou in Livingston 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 4,071 vehicles a day, roughly 12% of them trucks, projected to reach 4,478 by 2041. The structure is 80 ft (24.4 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesLA0042
CrossesPoley Bayou
Location0.7 M N of LA 16
RouteState Highway 42
CountyLivingston Parish
StateLouisiana
Coordinates30.3365, -90.7981
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 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 traffic4,071 (2021)
Projected traffic4,478 by 2041
Trucks12%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$412,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0042 over Poley Bayou built?

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

What condition is LA0042 over Poley 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 January 2024.

How much traffic does LA0042 over Poley Bayou carry?

About 4,071 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0042 over Poley Bayou?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0042 over Poley Bayou?

It is owned by the State Highway Agency.