US Bridges

SR 356 over Tuscumbia River Relief

Fair

Alcorn County, Mississippi · 2.4 MI E US 45 · Structure no. 310035600200560

Built
1985
40 years old
Condition
Fair
inspected July 2023
Type
Channel Beam
Concrete
Length
155 ft
5 main spans
Daily traffic
1,100
2023 count
Owner
State
State Highway Agency

About this bridge

SR 356 over Tuscumbia River Relief is a concrete channel beam carrying SR 356 over Tuscumbia River Relief 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.

It carries about 1,100 vehicles a day, roughly 11% of them trucks, projected to reach 1,100 by 2043. The structure is 155 ft (47.3 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 356
CrossesTuscumbia River Relief
Location2.4 MI E US 45
RouteState Highway 356
CountyAlcorn County
StateMississippi
Coordinates34.77027, -88.52201
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 rating88.5 US tons
Inventory rating53 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length155 ft (47.3 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 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
CrossesRelief for waterway
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 Relief built?

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

What condition is SR 356 over Tuscumbia River Relief 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 Relief carry?

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

How long is SR 356 over Tuscumbia River Relief?

The structure is 155 ft (47.3 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns SR 356 over Tuscumbia River Relief?

It is owned by the State Highway Agency.