US Bridges

Calypso ST over Melon Canal

Fair

Ouachita Parish, Louisiana · 0.1 MI N of I-20 · Structure no. 053732306920521

Built
2004
21 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
39 ft
2 main spans
Daily traffic
300
2003 count
Owner
City
City or Municipal Highway Agency

About this bridge

Calypso ST over Melon Canal is a concrete slab carrying Calypso ST over Melon Canal in Ouachita Parish, Louisiana. It was built in 2004, so it is 21 years old, younger 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 300 vehicles a day, projected to reach 330 by 2023. The structure is 39 ft (11.9 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCalypso ST
CrossesMelon Canal
Location0.1 MI N of I-20
RouteCounty Highway 0
CountyOuachita Parish
StateLouisiana
Coordinates32.5101, -92.09504
Functional classRural Local

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 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 rating50 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span20 ft (6.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2003)
Projected traffic330 by 2023
Trucks—
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Calypso ST over Melon Canal built?

It was built in 2004, making it 21 years old in 2025.

What condition is Calypso ST over Melon Canal 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 July 2024.

How much traffic does Calypso ST over Melon Canal carry?

About 300 vehicles per day (2003 count).

How long is Calypso ST over Melon Canal?

The structure is 39 ft (11.9 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Calypso ST over Melon Canal?

It is owned by the City or Municipal Highway Agency.