US Bridges

Eight Mile Loop over Youngs Bayou

FairPosted for load

Natchitoches Parish, Louisiana · 0.85 M. W. of LA 504 · Structure no. 083531444931021

Built
1980
45 years old
Condition
Fair
inspected January 2023
Type
Channel Beam
Prestressed Concrete
Length
61 ft
3 main spans
Daily traffic
22
2022 count
Owner
County
County Highway Agency

About this bridge

Eight Mile Loop over Youngs Bayou is a prestressed concrete channel beam carrying Eight Mile Loop over Youngs Bayou in Natchitoches Parish, Louisiana. It was built in 1980, so it is 45 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 22 vehicles a day, projected to reach 24 by 2042. The structure is 61 ft (18.6 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesEight Mile Loop
CrossesYoungs Bayou
Location0.85 M. W. of LA 504
RouteCounty Highway 0
CountyNatchitoches Parish
StateLouisiana
Coordinates31.74262, -93.1709
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87.9 US tons
Inventory rating81.8 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span20 ft (6.1 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22 (2022)
Projected traffic24 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$231,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Eight Mile Loop over Youngs Bayou built?

It was built in 1980, making it 45 years old in 2025.

What condition is Eight Mile Loop over Youngs 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 2023.

How much traffic does Eight Mile Loop over Youngs Bayou carry?

About 22 vehicles per day (2022 count).

How long is Eight Mile Loop over Youngs Bayou?

The structure is 61 ft (18.6 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.

Who owns Eight Mile Loop over Youngs Bayou?

It is owned by the County Highway Agency.