US Bridges

Doyle Melancon RD over Coulee

FairPosted for load

St. Martin Parish, Louisiana · 2.3 Mi. S of LA 347 · Structure no. 035030155915161

Built
2003
22 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
4,376
2020 count
Owner
County
County Highway Agency

About this bridge

Doyle Melancon RD over Coulee is a concrete slab carrying Doyle Melancon RD over Coulee in St. Martin Parish, Louisiana. It was built in 2003, so it is 22 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. Its operating status is: posted for load restriction.

It carries about 4,376 vehicles a day, projected to reach 4,813 by 2040. The structure is 80 ft (24.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDoyle Melancon RD
CrossesCoulee
Location2.3 Mi. S of LA 347
RouteCounty Highway 0
CountySt. Martin Parish
StateLouisiana
Coordinates30.25647, -91.86007
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 protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.4 US tons
Inventory rating66.5 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 width31 ft (9.3 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,376 (2020)
Projected traffic4,813 by 2040
Trucks—
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$288,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Doyle Melancon RD over Coulee built?

It was built in 2003, making it 22 years old in 2025.

What condition is Doyle Melancon RD over Coulee 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 October 2024.

How much traffic does Doyle Melancon RD over Coulee carry?

About 4,376 vehicles per day (2020 count).

How long is Doyle Melancon RD over Coulee?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Doyle Melancon RD over Coulee?

It is owned by the County Highway Agency.