US Bridges

Willis Road over Black Bayou

Good

Coahoma County, Mississippi · Sec 19 T25N R 3W B · Structure no. SA1400000000009

Built
2000
25 years old
Condition
Good
inspected February 2023
Type
Channel Beam
Concrete
Length
107 ft
5 main spans
Daily traffic
210
2023 count
Owner
County
County Highway Agency

About this bridge

Willis Road over Black Bayou is a concrete channel beam carrying Willis Road over Black Bayou in Coahoma County, Mississippi. It was built in 2000, so it is 25 years old, younger than the Mississippi average of 38.9 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 210 vehicles a day, roughly 15% of them trucks, projected to reach 315 by 2043. The structure is 107 ft (32.6 m) long and 35 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesWillis Road
CrossesBlack Bayou
LocationSec 19 T25N R 3W B
RouteCounty Highway 873
Coordinates34.01553, -90.54464
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.6 US tons
Inventory rating41.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span31 ft (9.4 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2023)
Projected traffic315 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Willis Road over Black Bayou built?

It was built in 2000, making it 25 years old in 2025.

What condition is Willis Road 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 February 2023.

How much traffic does Willis Road over Black Bayou carry?

About 210 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Willis Road over Black Bayou?

The structure is 107 ft (32.6 m) long with a longest span of 31 ft (9.4 m) and a deck 35 ft wide.

Who owns Willis Road over Black Bayou?

It is owned by the County Highway Agency.