US Bridges

LA0108 over Maple Fork

Fair

Calcasieu Parish, Louisiana · 0.8 MI N of I-10 · Structure no. 071008101906151

Built
1945
80 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
45 ft
8 main spans
Daily traffic
22,287
2021 count
Owner
State
State Highway Agency

About this bridge

LA0108 over Maple Fork is a concrete culvert carrying LA0108 over Maple Fork in Calcasieu Parish, Louisiana. It was built in 1945, so it is 80 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.

It carries about 22,287 vehicles a day, roughly 10% of them trucks, projected to reach 24,515 by 2041. The structure is 45 ft (13.7 m) long and 132 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLA0108
CrossesMaple Fork
Location0.8 MI N of I-10
RouteState Highway 108
CountyCalcasieu Parish
StateLouisiana
Coordinates30.22846, -93.32554
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans8
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span5 ft (1.5 m)
Deck width132 ft (40.2 m)
Roadway width82 ft (24.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,287 (2021)
Projected traffic24,515 by 2041
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0108 over Maple Fork built?

It was built in 1945, making it 80 years old in 2025.

What condition is LA0108 over Maple Fork 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 Maple Fork carry?

About 22,287 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0108 over Maple Fork?

The structure is 45 ft (13.7 m) long with a longest span of 5 ft (1.5 m) and a deck 132 ft wide.

Who owns LA0108 over Maple Fork?

It is owned by the State Highway Agency.