US Bridges

SR 50 over Tombigbee Relief

Fair

Lowndes County, Mississippi · 2.1 MI W SR 373 · Structure no. 310005004408470

Built
1959
66 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
320 ft
8 main spans
Daily traffic
4,900
2023 count
Owner
State
State Highway Agency

About this bridge

SR 50 over Tombigbee Relief is a prestressed concrete stringer/multi-beam or girder carrying SR 50 over Tombigbee Relief in Lowndes County, Mississippi. It was built in 1959, so it is 66 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 4,900 vehicles a day, roughly 14% of them trucks, projected to reach 4,900 by 2043. The structure is 320 ft (97.5 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 50
CrossesTombigbee Relief
Location2.1 MI W SR 373
RouteState Highway 50
CountyLowndes County
StateMississippi
Coordinates33.57898, -88.47336
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.5 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length320 ft (97.5 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,900 (2023)
Projected traffic4,900 by 2043
Trucks14%
Lanes on structure20
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed5 mi (8 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$507 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 50 over Tombigbee Relief built?

It was built in 1959, making it 66 years old in 2025.

What condition is SR 50 over Tombigbee 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 August 2024.

How much traffic does SR 50 over Tombigbee Relief carry?

About 4,900 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 50 over Tombigbee Relief?

The structure is 320 ft (97.5 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns SR 50 over Tombigbee Relief?

It is owned by the State Highway Agency.