US Bridges

LA0789 over Keatchie Bayou

Fair

De Soto Parish, Louisiana · 2.66 MI North of LA 172 · Structure no. 041608160902661

Built
1981
44 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
134 ft
7 main spans
Daily traffic
1,504
2021 count
Owner
State
State Highway Agency

About this bridge

LA0789 over Keatchie Bayou is a concrete slab carrying LA0789 over Keatchie Bayou in De Soto Parish, Louisiana. It was built in 1981, so it is 44 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 1,504 vehicles a day, roughly 19% of them trucks, projected to reach 1,654 by 2041. The structure is 134 ft (40.8 m) long and 31 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesLA0789
CrossesKeatchie Bayou
Location2.66 MI North of LA 172
RouteState Highway 789
CountyDe Soto Parish
StateLouisiana
Coordinates32.2249, -93.9037
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating71 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,504 (2021)
Projected traffic1,654 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 LA0789 over Keatchie Bayou built?

It was built in 1981, making it 44 years old in 2025.

What condition is LA0789 over Keatchie 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 2024.

How much traffic does LA0789 over Keatchie Bayou carry?

About 1,504 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0789 over Keatchie Bayou?

The structure is 134 ft (40.8 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA0789 over Keatchie Bayou?

It is owned by the State Highway Agency.