US Bridges

LA0028 over Muddy Bayou

Fair

La Salle Parish, Louisiana · 6.8 MI South of LA 84 · Structure no. 583000740308241

Built
1960
65 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
242 ft
6 main spans
Daily traffic
4,357
2021 count
Owner
State
State Highway Agency

About this bridge

LA0028 over Muddy Bayou is a steel stringer/multi-beam or girder carrying LA0028 over Muddy Bayou in La Salle Parish, Louisiana. It was built in 1960, so it is 65 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 4,357 vehicles a day, roughly 20% of them trucks, projected to reach 4,792 by 2041. The structure is 242 ft (73.8 m) long and 33 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

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CarriesLA0028
CrossesMuddy Bayou
Location6.8 MI South of LA 84
RouteState Highway 28
CountyLa Salle Parish
StateLouisiana
Coordinates31.50954, -92.0577
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length242 ft (73.8 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,357 (2021)
Projected traffic4,792 by 2041
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 LA0028 over Muddy Bayou built?

It was built in 1960, making it 65 years old in 2025.

What condition is LA0028 over Muddy 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 May 2023.

How much traffic does LA0028 over Muddy Bayou carry?

About 4,357 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is LA0028 over Muddy Bayou?

The structure is 242 ft (73.8 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns LA0028 over Muddy Bayou?

It is owned by the State Highway Agency.