US Bridges

US0061 over Tchackchou Bayou

Fair

St. James Parish, Louisiana · US0061 · Structure no. 614700070503622

Built
1954
71 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
8,171
2021 count
Owner
State
State Highway Agency

About this bridge

US0061 over Tchackchou Bayou is a concrete slab carrying US0061 over Tchackchou Bayou in St. James Parish, Louisiana. It was built in 1954, so it is 71 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 8,171 vehicles a day, roughly 17% of them trucks, projected to reach 8,988 by 2041. The structure is 80 ft (24.4 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesUS0061
CrossesTchackchou Bayou
LocationUS0061
RouteU.S. Route 61
CountySt. James Parish
StateLouisiana
Coordinates30.08831, -90.72095
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating25 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 width33 ft (10.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,171 (2021)
Projected traffic8,988 by 2041
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 US0061 over Tchackchou Bayou built?

It was built in 1954, making it 71 years old in 2025.

What condition is US0061 over Tchackchou 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 February 2023.

How much traffic does US0061 over Tchackchou Bayou carry?

About 8,171 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is US0061 over Tchackchou Bayou?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns US0061 over Tchackchou Bayou?

It is owned by the State Highway Agency.