US Bridges

Fdr 360 over Livrogne Bayou

Poor

Natchitoches Parish, Louisiana · 6.5 M. Wsw. of Gorum · Structure no. 080603000002321

Built
1978
47 years old
Condition
Poor
inspected March 2024
Type
Channel Beam
Prestressed Concrete
Length
56 ft
3 main spans
Daily traffic
30
1976 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 360 over Livrogne Bayou is a prestressed concrete channel beam carrying Fdr 360 over Livrogne Bayou in Natchitoches Parish, Louisiana. It was built in 1978, so it is 47 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 30 vehicles a day, projected to reach 45 by 2045. The structure is 56 ft (17.1 m) long and 17 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

Location

Open in Google Maps
CarriesFdr 360
CrossesLivrogne Bayou
Location6.5 M. Wsw. of Gorum
RouteFederal Lands Road 360.2
CountyNatchitoches Parish
StateLouisiana
Coordinates31.41504, -93.05263
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating15.8 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span18 ft (5.5 m)
Deck width17 ft (5.1 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (1976)
Projected traffic45 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 360 over Livrogne Bayou built?

It was built in 1978, making it 47 years old in 2025.

What condition is Fdr 360 over Livrogne Bayou in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does Fdr 360 over Livrogne Bayou carry?

About 30 vehicles per day (1976 count).

How long is Fdr 360 over Livrogne Bayou?

The structure is 56 ft (17.1 m) long with a longest span of 18 ft (5.5 m) and a deck 17 ft wide.

Who owns Fdr 360 over Livrogne Bayou?

It is owned by the U.S. Forest Service.