US Bridges

LA0108 over Drain

Fair

Calcasieu Parish, Louisiana · 2.6 MI South of I-10 · Structure no. 071001920102961

Built
1961
64 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
1,259
2022 count
Owner
State
State Highway Agency

About this bridge

LA0108 over Drain is a concrete culvert carrying LA0108 over Drain in Calcasieu 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 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 1,259 vehicles a day, roughly 17% of them trucks, projected to reach 1,384 by 2042. The structure is 21 ft (6.4 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLA0108
CrossesDrain
Location2.6 MI South of I-10
RouteState Highway 108
CountyCalcasieu Parish
StateLouisiana
Coordinates30.16876, -93.53864
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width34 ft (10.4 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,259 (2022)
Projected traffic1,384 by 2042
Trucks17%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$166,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0108 over Drain built?

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

What condition is LA0108 over Drain 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 March 2023.

How much traffic does LA0108 over Drain carry?

About 1,259 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is LA0108 over Drain?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns LA0108 over Drain?

It is owned by the State Highway Agency.