US Bridges

Rousseau RD over Tchefunete River

PoorPosted for load

St. Tammany Parish, Louisiana · 0.45 Miles North of LA.10 · Structure no. 625230283900881

Built
1973
52 years old
Condition
Poor
inspected February 2023
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
458
2017 count
Owner
County
County Highway Agency

About this bridge

Rousseau RD over Tchefunete River is a concrete slab carrying Rousseau RD over Tchefunete River in St. Tammany Parish, Louisiana. It was built in 1973, so it is 52 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 4 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. Its operating status is: posted for load restriction.

It carries about 458 vehicles a day, projected to reach 503 by 2037. The structure is 76 ft (23.2 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesRousseau RD
CrossesTchefunete River
Location0.45 Miles North of LA.10
RouteCounty Highway 0
CountySt. Tammany Parish
StateLouisiana
Coordinates30.47369, -90.14816
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.5 US tons
Inventory rating21.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic458 (2017)
Projected traffic503 by 2037
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 Rousseau RD over Tchefunete River built?

It was built in 1973, making it 52 years old in 2025.

What condition is Rousseau RD over Tchefunete River 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 February 2023.

How much traffic does Rousseau RD over Tchefunete River carry?

About 458 vehicles per day (2017 count).

How long is Rousseau RD over Tchefunete River?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Rousseau RD over Tchefunete River?

It is owned by the County Highway Agency.