US Bridges

South ST over Coulee

PoorPosted for load

Terrebonne Parish, Louisiana · 0.004 MI W of Deadwood RD · Structure no. 025529421905991

Built
1960
65 years old
Condition
Poor
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
31 ft
2 main spans
Daily traffic
135
2020 count
Owner
County
County Highway Agency

About this bridge

South ST over Coulee is a wood or timber stringer/multi-beam or girder carrying South ST over Coulee in Terrebonne Parish, Louisiana. It was built in 1960, so it is 65 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 135 vehicles a day, projected to reach 148 by 2040. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSouth ST
CrossesCoulee
Location0.004 MI W of Deadwood RD
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.69661, -90.99789
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 12 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.5 US tons
Inventory rating16.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length31 ft (9.4 m)
Longest span16 ft (4.9 m)
Deck width23 ft (7.1 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2020)
Projected traffic148 by 2040
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$141,000
NavigationNo navigation control on waterway

Frequently asked questions

When was South ST over Coulee built?

It was built in 1960, making it 65 years old in 2025.

What condition is South ST over Coulee in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does South ST over Coulee carry?

About 135 vehicles per day (2020 count).

How long is South ST over Coulee?

The structure is 31 ft (9.4 m) long with a longest span of 16 ft (4.9 m) and a deck 23 ft wide.

Who owns South ST over Coulee?

It is owned by the County Highway Agency.