US Bridges

Airline RD over Bayou Plaquemine Bruly

Poor

St. Landry Parish, Louisiana · 1.5 Mi. East of Ribbon RD · Structure no. 034930301920921

Built
1975
50 years old
Condition
Poor
inspected January 2025
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
150
2020 count
Owner
County
County Highway Agency

About this bridge

Airline RD over Bayou Plaquemine Bruly is a concrete slab carrying Airline RD over Bayou Plaquemine Bruly in St. Landry Parish, Louisiana. It was built in 1975, so it is 50 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.

It carries about 150 vehicles a day, projected to reach 165 by 2040. The structure is 76 ft (23.2 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAirline RD
CrossesBayou Plaquemine Bruly
Location1.5 Mi. East of Ribbon RD
RouteCounty Highway 0
CountySt. Landry Parish
StateLouisiana
Coordinates30.5025, -92.15326
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic165 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Airline RD over Bayou Plaquemine Bruly built?

It was built in 1975, making it 50 years old in 2025.

What condition is Airline RD over Bayou Plaquemine Bruly 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 January 2025.

How much traffic does Airline RD over Bayou Plaquemine Bruly carry?

About 150 vehicles per day (2020 count).

How long is Airline RD over Bayou Plaquemine Bruly?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Airline RD over Bayou Plaquemine Bruly?

It is owned by the County Highway Agency.