US Bridges

H.H. Wilson RD over Drainage Bayou

Good

Ascension Parish, Louisiana · 0.22 Mi. N. of LA 42 · Structure no. 610300000610005

Built
2024
1 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
62
2023 count
Owner
County
County Highway Agency

About this bridge

H.H. Wilson RD over Drainage Bayou is a concrete culvert carrying H.H. Wilson RD over Drainage Bayou in Ascension Parish, Louisiana. It was built in 2024, so it is 1 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 62 vehicles a day, projected to reach 68 by 2043. The structure is 29 ft (8.8 m) long and 45 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesH.H. Wilson RD
CrossesDrainage Bayou
Location0.22 Mi. N. of LA 42
RouteCounty Highway 0
CountyAscension Parish
StateLouisiana
Coordinates30.34059, -90.86909
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.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadGreater than HL 93
Structure length29 ft (8.8 m)
Longest span8 ft (2.4 m)
Deck width45 ft (13.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62 (2023)
Projected traffic68 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 H.H. Wilson RD over Drainage Bayou built?

It was built in 2024, making it 1 years old in 2025.

What condition is H.H. Wilson RD over Drainage Bayou 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 August 2024.

How much traffic does H.H. Wilson RD over Drainage Bayou carry?

About 62 vehicles per day (2023 count).

How long is H.H. Wilson RD over Drainage Bayou?

The structure is 29 ft (8.8 m) long with a longest span of 8 ft (2.4 m) and a deck 45 ft wide.

Who owns H.H. Wilson RD over Drainage Bayou?

It is owned by the County Highway Agency.