US Bridges

US0084 over Fourmile Bayou

Fair

De Soto Parish, Louisiana · 2.7 MI East of LA 175 · Structure no. 041600000017140

Built
1953
72 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
5,051
2021 count
Owner
State
State Highway Agency

About this bridge

US0084 over Fourmile Bayou is a concrete slab carrying US0084 over Fourmile Bayou in De Soto Parish, Louisiana. It was built in 1953, so it is 72 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 5,051 vehicles a day, roughly 26% of them trucks, projected to reach 5,556 by 2041. The structure is 100 ft (30.5 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS0084
CrossesFourmile Bayou
Location2.7 MI East of LA 175
RouteU.S. Route 84
CountyDe Soto Parish
StateLouisiana
Coordinates32.04926, -93.6472
Functional classRural Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating34 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,051 (2021)
Projected traffic5,556 by 2041
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$498,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US0084 over Fourmile Bayou built?

It was built in 1953, making it 72 years old in 2025.

What condition is US0084 over Fourmile 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 2024.

How much traffic does US0084 over Fourmile Bayou carry?

About 5,051 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is US0084 over Fourmile Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns US0084 over Fourmile Bayou?

It is owned by the State Highway Agency.