US Bridges

SR 397 over Ditch

Good

Kemper County, Mississippi · 2.5 MI N SR 21 · Structure no. 310039703501380

Built
2024
1 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
142 ft
1 main span
Daily traffic
670
2023 count
Owner
State
State Highway Agency

About this bridge

SR 397 over Ditch is a prestressed concrete stringer/multi-beam or girder carrying SR 397 over Ditch in Kemper County, Mississippi. It was built in 2024, so it is 1 years old, younger than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 670 vehicles a day, roughly 14% of them trucks, projected to reach 670 by 2043. The structure is 142 ft (43.3 m) long and 38 ft wide. If it were closed, the detour would be 28 mi (45 km).

CarriesSR 397
CrossesDitch
Location2.5 MI N SR 21
RouteState Highway 397
Coordinates32.91456, -88.84467
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating55.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length142 ft (43.3 m)
Longest span60 ft (18.3 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic670 (2023)
Projected traffic670 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 397 over Ditch built?

It was built in 2024, making it 1 years old in 2025.

What condition is SR 397 over Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does SR 397 over Ditch carry?

About 670 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 397 over Ditch?

The structure is 142 ft (43.3 m) long with a longest span of 60 ft (18.3 m) and a deck 38 ft wide.

Who owns SR 397 over Ditch?

It is owned by the State Highway Agency.