US Bridges

Evergreen RD over Tributary to Black Bayou

Good

Webster Parish, Louisiana · 0.20 MI W of LA 159 · Structure no. 046032508931531

Built
2001
24 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
22 ft
3 main spans
Daily traffic
110
2020 count
Owner
County
County Highway Agency

About this bridge

Evergreen RD over Tributary to Black Bayou is a concrete culvert carrying Evergreen RD over Tributary to Black Bayou in Webster Parish, Louisiana. It was built in 2001, so it is 24 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 110 vehicles a day, projected to reach 121 by 2040. The structure is 22 ft (6.7 m) long and 45 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesEvergreen RD
CrossesTributary to Black Bayou
Location0.20 MI W of LA 159
RouteCounty Highway 0
CountyWebster Parish
StateLouisiana
Coordinates32.84726, -93.25545
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
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 alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span7 ft (2.1 m)
Deck width45 ft (13.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2020)
Projected traffic121 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Evergreen RD over Tributary to Black Bayou built?

It was built in 2001, making it 24 years old in 2025.

What condition is Evergreen RD over Tributary to Black 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 July 2023.

How much traffic does Evergreen RD over Tributary to Black Bayou carry?

About 110 vehicles per day (2020 count).

How long is Evergreen RD over Tributary to Black Bayou?

The structure is 22 ft (6.7 m) long with a longest span of 7 ft (2.1 m) and a deck 45 ft wide.

Who owns Evergreen RD over Tributary to Black Bayou?

It is owned by the County Highway Agency.