US Bridges

LA0073 over New River

Fair

Ascension Parish, Louisiana · 0.1 M S of JCT LA429 LA73 · Structure no. 610300770103231

Built
1957
68 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
160 ft
8 main spans
Daily traffic
7,929
2021 count
Owner
State
State Highway Agency

About this bridge

LA0073 over New River is a concrete slab carrying LA0073 over New River in Ascension Parish, Louisiana. It was built in 1957, so it is 68 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 7,929 vehicles a day, roughly 7% of them trucks, projected to reach 8,721 by 2041. The structure is 160 ft (48.8 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLA0073
CrossesNew River
Location0.1 M S of JCT LA429 LA73
RouteState Highway 73
CountyAscension Parish
StateLouisiana
Coordinates30.23835, -90.98942
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadH 15
Structure length160 ft (48.8 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,929 (2021)
Projected traffic8,721 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$741,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0073 over New River built?

It was built in 1957, making it 68 years old in 2025.

What condition is LA0073 over New River 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 June 2024.

How much traffic does LA0073 over New River carry?

About 7,929 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is LA0073 over New River?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA0073 over New River?

It is owned by the State Highway Agency.