US Bridges

Hughes RD over Lasalle Coulee

FairPosted for load

St. Martin Parish, Louisiana · 0.4 Mi.E of US 90 · Structure no. 035030053915611

Built
1970
55 years old, rebuilt 2015
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
144
2020 count
Owner
County
County Highway Agency

About this bridge

Hughes RD over Lasalle Coulee is a concrete slab carrying Hughes RD over Lasalle Coulee in St. Martin Parish, Louisiana. It was built in 1970 and reconstructed in 2015, so it is 55 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 5 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 144 vehicles a day, projected to reach 158 by 2040. The structure is 57 ft (17.4 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHughes RD
CrossesLasalle Coulee
Location0.4 Mi.E of US 90
RouteCounty Highway 0
CountySt. Martin Parish
StateLouisiana
Coordinates30.08769, -91.93547
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating19 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 width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic144 (2020)
Projected traffic158 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 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 Hughes RD over Lasalle Coulee built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2015.

What condition is Hughes RD over Lasalle 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 Hughes RD over Lasalle Coulee carry?

About 144 vehicles per day (2020 count).

How long is Hughes RD over Lasalle Coulee?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 22 ft wide.

Who owns Hughes RD over Lasalle Coulee?

It is owned by the County Highway Agency.