US Bridges

Topsy RD over Little Indian Bayou

Fair

Calcasieu Parish, Louisiana · 0.1 MI East of US 171 · Structure no. 071030224931171

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
77 ft
4 main spans
Daily traffic
5,516
2021 count
Owner
County
County Highway Agency

About this bridge

Topsy RD over Little Indian Bayou is a concrete slab carrying Topsy RD over Little Indian Bayou in Calcasieu Parish, Louisiana. It was built in 1986, so it is 39 years old, younger 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 5,516 vehicles a day, projected to reach 6,067 by 2041. The structure is 77 ft (23.5 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesTopsy RD
CrossesLittle Indian Bayou
Location0.1 MI East of US 171
RouteCounty Highway 0
CountyCalcasieu Parish
StateLouisiana
Coordinates30.37363, -93.19825
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating21.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,516 (2021)
Projected traffic6,067 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Topsy RD over Little Indian Bayou built?

It was built in 1986, making it 39 years old in 2025.

What condition is Topsy RD over Little Indian 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 May 2023.

How much traffic does Topsy RD over Little Indian Bayou carry?

About 5,516 vehicles per day (2021 count).

How long is Topsy RD over Little Indian Bayou?

The structure is 77 ft (23.5 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Topsy RD over Little Indian Bayou?

It is owned by the County Highway Agency.