US Bridges

LA3073 over Vermilion River

Fair

Lafayette Parish, Louisiana · 0.6 MI0. West of LA 3095 · Structure no. 032808283901521

Built
1986
39 years old
Condition
Fair
inspected September 2024
Type
Movable - Swing
Steel
Length
405 ft
2 main spans
Daily traffic
46,837
2021 count
Owner
State
State Highway Agency

About this bridge

LA3073 over Vermilion River is a steel movable - swing carrying LA3073 over Vermilion River in Lafayette Parish, Louisiana. It was built in 1986, so it is 39 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 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 46,837 vehicles a day, roughly 10% of them trucks, projected to reach 51,520 by 2041. The structure is 405 ft (123.4 m) long and 71 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLA3073
CrossesVermilion River
Location0.6 MI0. West of LA 3095
RouteState Highway 3073
CountyLafayette Parish
StateLouisiana
Coordinates30.16304, -92.05629
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 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 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 rating57 US tons
Inventory rating35.1 US tons

Structure

Structure typeMovable - Swing
MaterialSteel
DeckOpen grating
Main spans2 (+12 approach)
Design loadHS 20
Structure length405 ft (123.4 m)
Longest span164 ft (50 m)
Deck width71 ft (21.5 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deck21 ft (6.3 m)

Traffic and service

Average daily traffic46,837 (2021)
Projected traffic51,520 by 2041
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA3073 over Vermilion River built?

It was built in 1986, making it 39 years old in 2025.

What condition is LA3073 over Vermilion 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 September 2024.

How much traffic does LA3073 over Vermilion River carry?

About 46,837 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA3073 over Vermilion River?

The structure is 405 ft (123.4 m) long with a longest span of 164 ft (50 m) and a deck 71 ft wide.

Who owns LA3073 over Vermilion River?

It is owned by the State Highway Agency.