US Bridges

LA1161 over Drain

Fair

Evangeline Parish, Louisiana · 0.7 MI N of LA 104 · Structure no. 032008202900681

Built
1962
63 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
40 ft
3 main spans
Daily traffic
1,953
2021 count
Owner
State
State Highway Agency

About this bridge

LA1161 over Drain is a steel culvert carrying LA1161 over Drain in Evangeline Parish, Louisiana. It was built in 1962, so it is 63 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 1,953 vehicles a day, roughly 12% of them trucks, projected to reach 2,148 by 2041. The structure is 40 ft (12.2 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLA1161
CrossesDrain
Location0.7 MI N of LA 104
RouteState Highway 1161
Coordinates30.65101, -92.3641
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadH 15
Structure length40 ft (12.2 m)
Longest span9 ft (2.7 m)
Deck width57 ft (17.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,953 (2021)
Projected traffic2,148 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 LA1161 over Drain built?

It was built in 1962, making it 63 years old in 2025.

What condition is LA1161 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 May 2024.

How much traffic does LA1161 over Drain carry?

About 1,953 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA1161 over Drain?

The structure is 40 ft (12.2 m) long with a longest span of 9 ft (2.7 m) and a deck 57 ft wide.

Who owns LA1161 over Drain?

It is owned by the State Highway Agency.