US Bridges

LA0504 over Rio-Hondo-Creek

Fair

Natchitoches Parish, Louisiana · 3.46 Mi. N of Int LA6 · Structure no. 083508350503461

Built
1979
46 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
1,737
2021 count
Owner
State
State Highway Agency

About this bridge

LA0504 over Rio-Hondo-Creek is a concrete slab carrying LA0504 over Rio-Hondo-Creek in Natchitoches Parish, Louisiana. It was built in 1979, so it is 46 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 1,737 vehicles a day, roughly 8% of them trucks, projected to reach 1,910 by 2041. The structure is 80 ft (24.4 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLA0504
CrossesRio-Hondo-Creek
Location3.46 Mi. N of Int LA6
RouteState Highway 504
Coordinates31.7742, -93.1486
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,737 (2021)
Projected traffic1,910 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 LA0504 over Rio-Hondo-Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is LA0504 over Rio-Hondo-Creek 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 February 2024.

How much traffic does LA0504 over Rio-Hondo-Creek carry?

About 1,737 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is LA0504 over Rio-Hondo-Creek?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns LA0504 over Rio-Hondo-Creek?

It is owned by the State Highway Agency.