US Bridges

Willow St. over Coulee

GoodPosted for load

St. Mary Parish, Louisiana · 1.2 Mi. W of LA 182 · Structure no. 035129471913121

Built
1957
68 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete
Length
40 ft
2 main spans
Daily traffic
1,350
2022 count
Owner
County
County Highway Agency

About this bridge

Willow St. over Coulee is a concrete slab carrying Willow St. over Coulee in St. Mary Parish, Louisiana. It was built in 1957, so it is 68 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 1,350 vehicles a day, projected to reach 1,485 by 2042. The structure is 40 ft (12.2 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWillow St.
CrossesCoulee
Location1.2 Mi. W of LA 182
RouteCounty Highway 0
CountySt. Mary Parish
StateLouisiana
Coordinates29.78573, -91.51964
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length40 ft (12.2 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2022)
Projected traffic1,485 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$168,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Willow St. over Coulee built?

It was built in 1957, making it 68 years old in 2025.

What condition is Willow St. over Coulee in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does Willow St. over Coulee carry?

About 1,350 vehicles per day (2022 count).

How long is Willow St. over Coulee?

The structure is 40 ft (12.2 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns Willow St. over Coulee?

It is owned by the County Highway Agency.