US Bridges

LA0109 over Drain

Fair

Beauregard Parish, Louisiana · 5.9 MI N of LA 12 · Structure no. 070601870300081

Built
1961
64 years old
Condition
Fair
inspected March 2024
Type
Culvert
Steel
Length
30 ft
4 main spans
Daily traffic
1,749
2021 count
Owner
State
State Highway Agency

About this bridge

LA0109 over Drain is a steel culvert carrying LA0109 over Drain in Beauregard 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 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 1,749 vehicles a day, roughly 17% of them trucks, projected to reach 1,923 by 2041. The structure is 30 ft (9.1 m) long and 39 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesLA0109
CrossesDrain
Location5.9 MI N of LA 12
RouteState Highway 109
Coordinates30.40371, -93.67302
Functional classRural Major 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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.1 US tons
Inventory rating81 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadH 15
Structure length30 ft (9.1 m)
Longest span6 ft (1.8 m)
Deck width39 ft (11.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,749 (2021)
Projected traffic1,923 by 2041
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemYes

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 LA0109 over Drain built?

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

What condition is LA0109 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 2024.

How much traffic does LA0109 over Drain carry?

About 1,749 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is LA0109 over Drain?

The structure is 30 ft (9.1 m) long with a longest span of 6 ft (1.8 m) and a deck 39 ft wide.

Who owns LA0109 over Drain?

It is owned by the State Highway Agency.