US Bridges

SR 356 over Tuscumbia River

FairPosted for load

Alcorn County, Mississippi · 2.5 MI E US 45 · Structure no. 310035600200570

Built
1985
40 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
102 ft
1 main span
Daily traffic
1,100
2023 count
Owner
State
State Highway Agency

About this bridge

SR 356 over Tuscumbia River is a prestressed concrete slab carrying SR 356 over Tuscumbia River in Alcorn County, Mississippi. It was built in 1985, so it is 40 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,100 vehicles a day, roughly 11% of them trucks, projected to reach 1,100 by 2043. The structure is 102 ft (31.1 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 356
CrossesTuscumbia River
Location2.5 MI E US 45
RouteState Highway 356
CountyAlcorn County
StateMississippi
Coordinates34.77012, -88.51969
Functional classRural Major Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating27.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,100 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 356 over Tuscumbia River built?

It was built in 1985, making it 40 years old in 2025.

What condition is SR 356 over Tuscumbia River 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 July 2023.

How much traffic does SR 356 over Tuscumbia River carry?

About 1,100 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 356 over Tuscumbia River?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns SR 356 over Tuscumbia River?

It is owned by the State Highway Agency.