US Bridges

LA3170 over Latanier Bayou

Fair

Rapides Parish, Louisiana · 3.78 Mi. East of LA 3170 · Structure no. 084008403503781

Built
1973
52 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
7,317
2021 count
Owner
State
State Highway Agency

About this bridge

LA3170 over Latanier Bayou is a concrete slab carrying LA3170 over Latanier Bayou in Rapides Parish, Louisiana. It was built in 1973, so it is 52 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 7,317 vehicles a day, roughly 14% of them trucks, projected to reach 8,048 by 2041. The structure is 80 ft (24.4 m) long and 30 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesLA3170
CrossesLatanier Bayou
Location3.78 Mi. East of LA 3170
RouteState Highway 3170
CountyRapides Parish
StateLouisiana
Coordinates31.17643, -92.3552
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51 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 traffic7,317 (2021)
Projected traffic8,048 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$412,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA3170 over Latanier Bayou built?

It was built in 1973, making it 52 years old in 2025.

What condition is LA3170 over Latanier 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 2024.

How much traffic does LA3170 over Latanier Bayou carry?

About 7,317 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA3170 over Latanier 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 LA3170 over Latanier Bayou?

It is owned by the State Highway Agency.