US Bridges

SR 178 over Dredge Ditch

Fair

Marshall County, Mississippi · 0.7 MI E SR 309 · Structure no. 310017804701450

Built
1936
89 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
3 main spans
Daily traffic
2,400
2023 count
Owner
State
State Highway Agency

About this bridge

SR 178 over Dredge Ditch is a steel stringer/multi-beam or girder carrying SR 178 over Dredge Ditch in Marshall County, Mississippi. It was built in 1936, so it is 89 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 2,400 vehicles a day, roughly 8% of them trucks, projected to reach 2,400 by 2043. The structure is 90 ft (27.4 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 178
CrossesDredge Ditch
Location0.7 MI E SR 309
RouteState Highway 178
CountyMarshall County
StateMississippi
Coordinates34.8706, -89.67719
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 rating58.2 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2023)
Projected traffic2,400 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$939 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 178 over Dredge Ditch built?

It was built in 1936, making it 89 years old in 2025.

What condition is SR 178 over Dredge Ditch 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 April 2024.

How much traffic does SR 178 over Dredge Ditch carry?

About 2,400 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 178 over Dredge Ditch?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns SR 178 over Dredge Ditch?

It is owned by the State Highway Agency.