US Bridges

N. Lightner ST over Lateral L-14

Fair

Calcasieu Parish, Louisiana · 0.1 MI E of LA 383 · Structure no. 071030147930071

Built
2001
24 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
79 ft
4 main spans
Daily traffic
100
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

N. Lightner ST over Lateral L-14 is a concrete slab carrying N. Lightner ST over Lateral L-14 in Calcasieu Parish, Louisiana. It was built in 2001, so it is 24 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 100 vehicles a day, projected to reach 110 by 2039. The structure is 79 ft (24.1 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesN. Lightner ST
CrossesLateral L-14
Location0.1 MI E of LA 383
RouteCounty Highway 0
CountyCalcasieu Parish
StateLouisiana
Coordinates30.24259, -93.01104
Functional classUrban 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 inspectionJune 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span20 ft (6.1 m)
Deck width42 ft (12.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic110 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N. Lightner ST over Lateral L-14 built?

It was built in 2001, making it 24 years old in 2025.

What condition is N. Lightner ST over Lateral L-14 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 June 2023.

How much traffic does N. Lightner ST over Lateral L-14 carry?

About 100 vehicles per day (2019 count).

How long is N. Lightner ST over Lateral L-14?

The structure is 79 ft (24.1 m) long with a longest span of 20 ft (6.1 m) and a deck 42 ft wide.

Who owns N. Lightner ST over Lateral L-14?

It is owned by the Town or Township Highway Agency.