US Bridges

LA0175 over Rambin Bayou

Fair

De Soto Parish, Louisiana · .4 MI East of I-49 · Structure no. 041600350502801

Built
1980
45 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
250 ft
5 main spans
Daily traffic
1,142
2021 count
Owner
State
State Highway Agency

About this bridge

LA0175 over Rambin Bayou is a prestressed concrete continuous stringer/multi-beam or girder carrying LA0175 over Rambin Bayou in De Soto Parish, Louisiana. It was built in 1980, so it is 45 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 1,142 vehicles a day, roughly 19% of them trucks, projected to reach 1,256 by 2041. The structure is 250 ft (76.2 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLA0175
CrossesRambin Bayou
Location.4 MI East of I-49
RouteState Highway 175
Coordinates32.22284, -93.7046
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length250 ft (76.2 m)
Longest span50 ft (15.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,142 (2021)
Projected traffic1,256 by 2041
Trucks19%
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 LA0175 over Rambin Bayou built?

It was built in 1980, making it 45 years old in 2025.

What condition is LA0175 over Rambin 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 June 2023.

How much traffic does LA0175 over Rambin Bayou carry?

About 1,142 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0175 over Rambin Bayou?

The structure is 250 ft (76.2 m) long with a longest span of 50 ft (15.2 m) and a deck 43 ft wide.

Who owns LA0175 over Rambin Bayou?

It is owned by the State Highway Agency.