US Bridges

Lisbon Hebron RD over Darbonne Bayou Tributar

Fair

Claiborne Parish, Louisiana · 2.29 Mi. S. of LA 2 · Structure no. 041432510924831

Built
1986
39 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
90
2019 count
Owner
County
County Highway Agency

About this bridge

Lisbon Hebron RD over Darbonne Bayou Tributar is a concrete slab carrying Lisbon Hebron RD over Darbonne Bayou Tributar in Claiborne 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 6 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 90 vehicles a day, projected to reach 99 by 2039. The structure is 57 ft (17.4 m) long and 27 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesLisbon Hebron RD
CrossesDarbonne Bayou Tributar
Location2.29 Mi. S. of LA 2
RouteCounty Highway 0
CountyClaiborne Parish
StateLouisiana
Coordinates32.85001, -92.80528
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2019)
Projected traffic99 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Lisbon Hebron RD over Darbonne Bayou Tributar built?

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

What condition is Lisbon Hebron RD over Darbonne Bayou Tributar 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 October 2023.

How much traffic does Lisbon Hebron RD over Darbonne Bayou Tributar carry?

About 90 vehicles per day (2019 count).

How long is Lisbon Hebron RD over Darbonne Bayou Tributar?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Lisbon Hebron RD over Darbonne Bayou Tributar?

It is owned by the County Highway Agency.