US Bridges

US0061 over Airline Drainage

Good

Ascension Parish, Louisiana · 1.7 M SE of US 61&LA 22 · Structure no. 610300070603802

Built
1954
71 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
8,171
2021 count
Owner
State
State Highway Agency

About this bridge

US0061 over Airline Drainage is a concrete slab carrying US0061 over Airline Drainage in Ascension Parish, Louisiana. It was built in 1954, so it is 71 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,171 vehicles a day, roughly 17% of them trucks, projected to reach 8,988 by 2041. The structure is 100 ft (30.5 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS0061
CrossesAirline Drainage
Location1.7 M SE of US 61&LA 22
RouteU.S. Route 61
CountyAscension Parish
StateLouisiana
Coordinates30.17404, -90.83273
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,171 (2021)
Projected traffic8,988 by 2041
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$498,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US0061 over Airline Drainage built?

It was built in 1954, making it 71 years old in 2025.

What condition is US0061 over Airline Drainage in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does US0061 over Airline Drainage carry?

About 8,171 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is US0061 over Airline Drainage?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns US0061 over Airline Drainage?

It is owned by the State Highway Agency.