US Bridges

Jules Lagrange RD over Coulee De Marks

FairPosted for load

St. Landry Parish, Louisiana · 1.58 MI S of LA 347 · Structure no. 034930261915891

Built
1967
58 years old, rebuilt 2016
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
1,550
2020 count
Owner
County
County Highway Agency

About this bridge

Jules Lagrange RD over Coulee De Marks is a concrete slab carrying Jules Lagrange RD over Coulee De Marks in St. Landry Parish, Louisiana. It was built in 1967 and reconstructed in 2016, so it is 58 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. Its operating status is: posted for load restriction.

It carries about 1,550 vehicles a day, projected to reach 1,705 by 2040. The structure is 57 ft (17.4 m) long and 27 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesJules Lagrange RD
CrossesCoulee De Marks
Location1.58 MI S of LA 347
RouteCounty Highway 0
CountySt. Landry Parish
StateLouisiana
Coordinates30.43426, -91.98365
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating27.4 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2020)
Projected traffic1,705 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$217,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jules Lagrange RD over Coulee De Marks built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2016.

What condition is Jules Lagrange RD over Coulee De Marks 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 April 2023.

How much traffic does Jules Lagrange RD over Coulee De Marks carry?

About 1,550 vehicles per day (2020 count).

How long is Jules Lagrange RD over Coulee De Marks?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Jules Lagrange RD over Coulee De Marks?

It is owned by the County Highway Agency.