US Bridges

Standard Mill RD over Coulee

Fair

Acadia Parish, Louisiana · 0.5 MI W. of LA 35 · Structure no. 030130129921671

Built
1986
39 years old
Condition
Fair
inspected July 2024
Type
Culvert
Steel
Length
29 ft
3 main spans
Daily traffic
2,400
2020 count
Owner
County
County Highway Agency

About this bridge

Standard Mill RD over Coulee is a steel culvert carrying Standard Mill RD over Coulee in Acadia Parish, Louisiana. It was built in 1986, so it is 39 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.

It carries about 2,400 vehicles a day, projected to reach 2,640 by 2040. The structure is 29 ft (8.8 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesStandard Mill RD
CrossesCoulee
Location0.5 MI W. of LA 35
RouteCounty Highway 0
CountyAcadia Parish
StateLouisiana
Coordinates30.21496, -92.27775
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span8 ft (2.4 m)
Deck width80 ft (24.4 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2020)
Projected traffic2,640 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$133,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Standard Mill RD over Coulee built?

It was built in 1986, making it 39 years old in 2025.

What condition is Standard Mill 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 July 2024.

How much traffic does Standard Mill RD over Coulee carry?

About 2,400 vehicles per day (2020 count).

How long is Standard Mill RD over Coulee?

The structure is 29 ft (8.8 m) long with a longest span of 8 ft (2.4 m) and a deck 80 ft wide.

Who owns Standard Mill RD over Coulee?

It is owned by the County Highway Agency.