US Bridges

Clarence Ivory RD over Black Bayou

Good

Claiborne Parish, Louisiana · 0.65 MI W. of LA 534 · Structure no. 041432526931111

Built
1998
27 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
90
2019 count
Owner
County
County Highway Agency

About this bridge

Clarence Ivory RD over Black Bayou is a concrete slab carrying Clarence Ivory RD over Black Bayou in Claiborne Parish, Louisiana. It was built in 1998, so it is 27 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 90 vehicles a day, projected to reach 99 by 2039. The structure is 76 ft (23.2 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesClarence Ivory RD
CrossesBlack Bayou
Location0.65 MI W. of LA 534
RouteCounty Highway 0
Coordinates32.87776, -93.18611
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2019)
Projected traffic99 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Clarence Ivory RD over Black Bayou built?

It was built in 1998, making it 27 years old in 2025.

What condition is Clarence Ivory RD over 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 October 2023.

How much traffic does Clarence Ivory RD over Black Bayou carry?

About 90 vehicles per day (2019 count).

How long is Clarence Ivory RD over Black Bayou?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Clarence Ivory RD over Black Bayou?

It is owned by the County Highway Agency.