US Bridges

Cooper Lake RD over Cypress Bayou

FairPosted for load

Morehouse Parish, Louisiana · 0.2 MI NW of LA 830-3 · Structure no. 053432476915241

Built
1999
26 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
26 ft
3 main spans
Daily traffic
1,250
1978 count
Owner
County
County Highway Agency

About this bridge

Cooper Lake RD over Cypress Bayou is a steel culvert carrying Cooper Lake RD over Cypress Bayou in Morehouse Parish, Louisiana. It was built in 1999, so it is 26 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. Its operating status is: posted for load restriction.

It carries about 1,250 vehicles a day, projected to reach 1,375 by 1998. The structure is 26 ft (7.9 m) long and 68 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesCooper Lake RD
CrossesCypress Bayou
Location0.2 MI NW of LA 830-3
RouteCounty Highway 0
CountyMorehouse Parish
StateLouisiana
Coordinates32.793, -91.87226
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15.8 US tons
Inventory rating12.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span7 ft (2.1 m)
Deck width68 ft (20.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,250 (1978)
Projected traffic1,375 by 1998
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cooper Lake RD over Cypress Bayou built?

It was built in 1999, making it 26 years old in 2025.

What condition is Cooper Lake RD over Cypress Bayou 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 September 2024.

How much traffic does Cooper Lake RD over Cypress Bayou carry?

About 1,250 vehicles per day (1978 count).

How long is Cooper Lake RD over Cypress Bayou?

The structure is 26 ft (7.9 m) long with a longest span of 7 ft (2.1 m) and a deck 68 ft wide.

Who owns Cooper Lake RD over Cypress Bayou?

It is owned by the County Highway Agency.