US Bridges

Louisiana Ave. over Webb Coulee

GoodPosted for load

Lafayette Parish, Louisiana · 0.2 MI N of LA 94 · Structure no. 032830143920011

Built
1966
59 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
8,600
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Louisiana Ave. over Webb Coulee is a concrete culvert carrying Louisiana Ave. over Webb Coulee in Lafayette Parish, Louisiana. It was built in 1966, so it is 59 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. Its operating status is: posted for load restriction.

It carries about 8,600 vehicles a day, projected to reach 9,460 by 2040. The structure is 29 ft (8.8 m) long and 414 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLouisiana Ave.
CrossesWebb Coulee
Location0.2 MI N of LA 94
RouteCounty Highway 0
CountyLafayette Parish
StateLouisiana
Coordinates30.23807, -92.00167
Functional classUrban Local

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30.3 US tons
Inventory rating23.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width414 ft (126.2 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,600 (2020)
Projected traffic9,460 by 2040
Trucks—
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Louisiana Ave. over Webb Coulee built?

It was built in 1966, making it 59 years old in 2025.

What condition is Louisiana Ave. over Webb 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 January 2024.

How much traffic does Louisiana Ave. over Webb Coulee carry?

About 8,600 vehicles per day (2020 count).

How long is Louisiana Ave. over Webb Coulee?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 414 ft wide.

Who owns Louisiana Ave. over Webb Coulee?

It is owned by the City or Municipal Highway Agency.