US Bridges

US0080 over Cow Bayou

Fair

Madison Parish, Louisiana · 1.8 MI East of LA 17 · Structure no. 053300020401101

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
200 ft
10 main spans
Daily traffic
1,358
2021 count
Owner
State
State Highway Agency

About this bridge

US0080 over Cow Bayou is a concrete slab carrying US0080 over Cow Bayou in Madison Parish, Louisiana. It was built in 1955, so it is 70 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.

It carries about 1,358 vehicles a day, roughly 15% of them trucks, projected to reach 1,493 by 2041. The structure is 200 ft (61 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesUS0080
CrossesCow Bayou
Location1.8 MI East of LA 17
RouteU.S. Route 80
CountyMadison Parish
StateLouisiana
Coordinates32.45558, -91.4582
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length200 ft (61 m)
Longest span20 ft (6.1 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,358 (2021)
Projected traffic1,493 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US0080 over Cow Bayou built?

It was built in 1955, making it 70 years old in 2025.

What condition is US0080 over Cow 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 April 2023.

How much traffic does US0080 over Cow Bayou carry?

About 1,358 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is US0080 over Cow Bayou?

The structure is 200 ft (61 m) long with a longest span of 20 ft (6.1 m) and a deck 35 ft wide.

Who owns US0080 over Cow Bayou?

It is owned by the State Highway Agency.