US Bridges

Janesville RD over Tiger Bayou

Good

West Carroll Parish, Louisiana · 0.7 MI S of LA 586 · Structure no. 056232567912591

Built
2000
25 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete
Length
138 ft
7 main spans
Daily traffic
320
2019 count
Owner
County
County Highway Agency

About this bridge

Janesville RD over Tiger Bayou is a concrete slab carrying Janesville RD over Tiger Bayou in West Carroll Parish, Louisiana. It was built in 2000, so it is 25 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 320 vehicles a day, projected to reach 352 by 2039. The structure is 138 ft (42.1 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesJanesville RD
CrossesTiger Bayou
Location0.7 MI S of LA 586
RouteCounty Highway 0
CountyWest Carroll Parish
StateLouisiana
Coordinates32.94571, -91.43123
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.5 US tons
Inventory rating33.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length138 ft (42.1 m)
Longest span20 ft (6.1 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2019)
Projected traffic352 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Janesville RD over Tiger Bayou built?

It was built in 2000, making it 25 years old in 2025.

What condition is Janesville RD over Tiger Bayou in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does Janesville RD over Tiger Bayou carry?

About 320 vehicles per day (2019 count).

How long is Janesville RD over Tiger Bayou?

The structure is 138 ft (42.1 m) long with a longest span of 20 ft (6.1 m) and a deck 27 ft wide.

Who owns Janesville RD over Tiger Bayou?

It is owned by the County Highway Agency.