US Bridges

SR 178 over Tombigbee River

FairPosted for load

Itawamba County, Mississippi · 6.1 MI E Lee Cl · Structure no. 310017802910480

Built
1931
94 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
389 ft
3 main spans
Daily traffic
150
2023 count
Owner
State
State Highway Agency

About this bridge

SR 178 over Tombigbee River is a steel continuous stringer/multi-beam or girder carrying SR 178 over Tombigbee River in Itawamba County, Mississippi. It was built in 1931, so it is 94 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 150 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2043. The structure is 389 ft (118.6 m) long and 25 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSR 178
CrossesTombigbee River
Location6.1 MI E Lee Cl
RouteState Highway 178
CountyItawamba County
StateMississippi
Coordinates34.2648, -88.44579
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.8 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+6 approach)
Design loadH 15
Structure length389 ft (118.6 m)
Longest span90 ft (27.4 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic150 by 2043
Trucks10%
Lanes on structure20
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$354 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 178 over Tombigbee River built?

It was built in 1931, making it 94 years old in 2025.

What condition is SR 178 over Tombigbee 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 August 2024.

How much traffic does SR 178 over Tombigbee River carry?

About 150 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR 178 over Tombigbee River?

The structure is 389 ft (118.6 m) long with a longest span of 90 ft (27.4 m) and a deck 25 ft wide.

Who owns SR 178 over Tombigbee River?

It is owned by the State Highway Agency.