US Bridges

LA0191 over Macdonald Bayou

Fair

Sabine Parish, Louisiana · 1.0 MI North of LA 174 · Structure no. 084304320156641

Built
1959
66 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
610
2021 count
Owner
State
State Highway Agency

About this bridge

LA0191 over Macdonald Bayou is a concrete culvert carrying LA0191 over Macdonald Bayou in Sabine Parish, Louisiana. It was built in 1959, so it is 66 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 610 vehicles a day, roughly 14% of them trucks, projected to reach 671 by 2041. The structure is 33 ft (10.1 m) long and 52 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLA0191
CrossesMacdonald Bayou
Location1.0 MI North of LA 174
RouteState Highway 191
Coordinates31.78184, -93.78001
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width52 ft (15.8 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic610 (2021)
Projected traffic671 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 LA0191 over Macdonald Bayou built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0191 over Macdonald Bayou 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 August 2024.

How much traffic does LA0191 over Macdonald Bayou carry?

About 610 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0191 over Macdonald Bayou?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 52 ft wide.

Who owns LA0191 over Macdonald Bayou?

It is owned by the State Highway Agency.