US Bridges

Mcwilliams RD over Richies Bayou

Fair

Coahoma County, Mississippi · Sec 27 T28N R 5W B · Structure no. SA1400000000089

Built
1973
52 years old
Condition
Fair
inspected February 2024
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
125
2024 count
Owner
County
County Highway Agency

About this bridge

Mcwilliams RD over Richies Bayou is a concrete channel beam carrying Mcwilliams RD over Richies Bayou in Coahoma County, Mississippi. It was built in 1973, so it is 52 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 125 vehicles a day, roughly 20% of them trucks, projected to reach 188 by 2044. The structure is 57 ft (17.4 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesMcwilliams RD
CrossesRichies Bayou
LocationSec 27 T28N R 5W B
RouteCounty Highway 178
CountyCoahoma County
StateMississippi
Coordinates34.27272, -90.70289
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating38.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2024)
Projected traffic188 by 2044
Trucks20%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$175,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mcwilliams RD over Richies Bayou built?

It was built in 1973, making it 52 years old in 2025.

What condition is Mcwilliams RD over Richies Bayou in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does Mcwilliams RD over Richies Bayou carry?

About 125 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is Mcwilliams RD over Richies Bayou?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Mcwilliams RD over Richies Bayou?

It is owned by the County Highway Agency.