US Bridges

Swan Lake Road over Cassidy Bayou

Fair

Tallahatchie County, Mississippi · Sec 4 T23N R 1W B · Structure no. SA6800000000009

Built
1995
30 years old
Condition
Fair
inspected June 2023
Type
Channel Beam
Concrete
Length
155 ft
5 main spans
Daily traffic
220
2015 count
Owner
County
County Highway Agency

About this bridge

Swan Lake Road over Cassidy Bayou is a concrete channel beam carrying Swan Lake Road over Cassidy Bayou in Tallahatchie County, Mississippi. It was built in 1995, so it is 30 years old, younger 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 220 vehicles a day, roughly 8% of them trucks, projected to reach 330 by 2035. The structure is 155 ft (47.2 m) long and 33 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesSwan Lake Road
CrossesCassidy Bayou
LocationSec 4 T23N R 1W B
RouteCounty Highway 47
CountyTallahatchie County
StateMississippi
Coordinates33.89586, -90.30133
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65.4 US tons
Inventory rating39.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span31 ft (9.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2015)
Projected traffic330 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Swan Lake Road over Cassidy Bayou built?

It was built in 1995, making it 30 years old in 2025.

What condition is Swan Lake Road over Cassidy 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 June 2023.

How much traffic does Swan Lake Road over Cassidy Bayou carry?

About 220 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Swan Lake Road over Cassidy Bayou?

The structure is 155 ft (47.2 m) long with a longest span of 31 ft (9.4 m) and a deck 33 ft wide.

Who owns Swan Lake Road over Cassidy Bayou?

It is owned by the County Highway Agency.