US Bridges

SR 713 over Lake Cormorant Bayou

Fair

Tunica County, Mississippi · 0.7 MI E SR 3 · Structure no. 31007130720057A

Built
2006
19 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
297 ft
1 main span
Daily traffic
1,900
2023 count
Owner
State
State Highway Agency

About this bridge

SR 713 over Lake Cormorant Bayou is a prestressed concrete stringer/multi-beam or girder carrying SR 713 over Lake Cormorant Bayou in Tunica County, Mississippi. It was built in 2006, so it is 19 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 5 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 1,900 vehicles a day, roughly 9% of them trucks, projected to reach 1,900 by 2043. The structure is 297 ft (90.5 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 713
CrossesLake Cormorant Bayou
Location0.7 MI E SR 3
RouteState Highway 713
CountyTunica County
StateMississippi
Coordinates34.83003, -90.21931
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating38.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadHS 20
Structure length297 ft (90.5 m)
Longest span59 ft (18 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2023)
Projected traffic1,900 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 713 over Lake Cormorant Bayou built?

It was built in 2006, making it 19 years old in 2025.

What condition is SR 713 over Lake Cormorant 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 November 2024.

How much traffic does SR 713 over Lake Cormorant Bayou carry?

About 1,900 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 713 over Lake Cormorant Bayou?

The structure is 297 ft (90.5 m) long with a longest span of 59 ft (18 m) and a deck 44 ft wide.

Who owns SR 713 over Lake Cormorant Bayou?

It is owned by the State Highway Agency.