US Bridges

Kennerson RD over Bayou Kennison

FairPosted for load

St. Landry Parish, Louisiana · 0.2 Mi. S. of I49 Srvc RD · Structure no. 034930344920311

Built
1971
54 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
575
2020 count
Owner
County
County Highway Agency

About this bridge

Kennerson RD over Bayou Kennison is a concrete slab carrying Kennerson RD over Bayou Kennison in St. Landry Parish, Louisiana. It was built in 1971, so it is 54 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 575 vehicles a day, projected to reach 632 by 2040. The structure is 76 ft (23.2 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesKennerson RD
CrossesBayou Kennison
Location0.2 Mi. S. of I49 Srvc RD
RouteCounty Highway 0
CountySt. Landry Parish
StateLouisiana
Coordinates30.57502, -92.05358
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
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 alignment6: Equal to present minimum criteria
Operating rating18.2 US tons
Inventory rating15 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 (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic575 (2020)
Projected traffic632 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kennerson RD over Bayou Kennison built?

It was built in 1971, making it 54 years old in 2025.

What condition is Kennerson RD over Bayou Kennison 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 2025.

How much traffic does Kennerson RD over Bayou Kennison carry?

About 575 vehicles per day (2020 count).

How long is Kennerson RD over Bayou Kennison?

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 Kennerson RD over Bayou Kennison?

It is owned by the County Highway Agency.