US Bridges

LA3073 over Coulee

Good

Lafayette Parish, Louisiana · 0.73 MI E of LA 89 · Structure no. 032800000030418

Built
2009
16 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
28 ft
4 main spans
Daily traffic
46,837
2021 count
Owner
State
State Highway Agency

About this bridge

LA3073 over Coulee is a concrete culvert carrying LA3073 over Coulee in Lafayette Parish, Louisiana. It was built in 2009, so it is 16 years old, younger 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 46,837 vehicles a day, roughly 10% of them trucks, projected to reach 51,520 by 2041. The structure is 28 ft (8.5 m) long and 130 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLA3073
CrossesCoulee
Location0.73 MI E of LA 89
RouteState Highway 3073
CountyLafayette Parish
StateLouisiana
Coordinates30.13462, -91.9785
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span7 ft (2.1 m)
Deck width130 ft (39.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA3073 over Coulee built?

It was built in 2009, making it 16 years old in 2025.

What condition is LA3073 over Coulee 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 February 2023.

How much traffic does LA3073 over Coulee carry?

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

How long is LA3073 over Coulee?

The structure is 28 ft (8.5 m) long with a longest span of 7 ft (2.1 m) and a deck 130 ft wide.

Who owns LA3073 over Coulee?

It is owned by the State Highway Agency.