US Bridges

Piat Rd. over Parc Perdu Bayou

Fair

Lafayette Parish, Louisiana · 0.4 MI E of LA 89 · Structure no. 032830039915861

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
1,550
2020 count
Owner
County
County Highway Agency

About this bridge

Piat Rd. over Parc Perdu Bayou is a concrete slab carrying Piat Rd. over Parc Perdu Bayou in Lafayette Parish, Louisiana. It was built in 1987, so it is 38 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 1,550 vehicles a day, projected to reach 1,705 by 2040. The structure is 57 ft (17.4 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPiat Rd.
CrossesParc Perdu Bayou
Location0.4 MI E of LA 89
RouteCounty Highway 0
CountyLafayette Parish
StateLouisiana
Coordinates30.06557, -91.97603
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
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 rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2020)
Projected traffic1,705 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Piat Rd. over Parc Perdu Bayou built?

It was built in 1987, making it 38 years old in 2025.

What condition is Piat Rd. over Parc Perdu 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 October 2023.

How much traffic does Piat Rd. over Parc Perdu Bayou carry?

About 1,550 vehicles per day (2020 count).

How long is Piat Rd. over Parc Perdu Bayou?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Piat Rd. over Parc Perdu Bayou?

It is owned by the County Highway Agency.