US Bridges

Klondyke RD over Lacache Bayou

FairPosted for load

Terrebonne Parish, Louisiana · 0.5 MI NE of LA 56 · Structure no. 025529322903561

Built
1967
58 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
58 ft
3 main spans
Daily traffic
5,080
2022 count
Owner
County
County Highway Agency

About this bridge

Klondyke RD over Lacache Bayou is a concrete slab carrying Klondyke RD over Lacache Bayou in Terrebonne Parish, Louisiana. It was built in 1967, so it is 58 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 5,080 vehicles a day, projected to reach 5,588 by 2042. The structure is 58 ft (17.7 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesKlondyke RD
CrossesLacache Bayou
Location0.5 MI NE of LA 56
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.5351, -90.59404
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 inspectionMay 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.1 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,080 (2022)
Projected traffic5,588 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$255,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Klondyke RD over Lacache Bayou built?

It was built in 1967, making it 58 years old in 2025.

What condition is Klondyke RD over Lacache 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 Klondyke RD over Lacache Bayou carry?

About 5,080 vehicles per day (2022 count).

How long is Klondyke RD over Lacache Bayou?

The structure is 58 ft (17.7 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns Klondyke RD over Lacache Bayou?

It is owned by the County Highway Agency.