US Bridges

LA0066 over Little Bayou Sara

Fair

West Feliciana Parish, Louisiana · LA0066 · Structure no. 616302510203641

Built
1961
64 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
442 ft
1 main span
Daily traffic
1,677
2021 count
Owner
State
State Highway Agency

About this bridge

LA0066 over Little Bayou Sara is a steel stringer/multi-beam or girder carrying LA0066 over Little Bayou Sara in West Feliciana Parish, Louisiana. It was built in 1961, so it is 64 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.

It carries about 1,677 vehicles a day, roughly 10% of them trucks, projected to reach 1,844 by 2041. The structure is 442 ft (134.7 m) long and 30 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesLA0066
CrossesLittle Bayou Sara
LocationLA0066
RouteState Highway 66
CountyWest Feliciana Parish
StateLouisiana
Coordinates30.96958, -91.48041
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadHS 20
Structure length442 ft (134.7 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,677 (2021)
Projected traffic1,844 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 LA0066 over Little Bayou Sara built?

It was built in 1961, making it 64 years old in 2025.

What condition is LA0066 over Little Bayou Sara 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 December 2024.

How much traffic does LA0066 over Little Bayou Sara carry?

About 1,677 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0066 over Little Bayou Sara?

The structure is 442 ft (134.7 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns LA0066 over Little Bayou Sara?

It is owned by the State Highway Agency.