US Bridges

SR 471 over Ditch

Good

Rankin County, Mississippi · 3.3 MI N I 20 · Structure no. 310047106100400

Built
1953
72 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
11,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR 471 over Ditch is a concrete culvert carrying SR 471 over Ditch in Rankin County, Mississippi. It was built in 1953, so it is 72 years old, older 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 11,000 vehicles a day, roughly 12% of them trucks, projected to reach 11,000 by 2043. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 31.7 mi (51 km).

CarriesSR 471
CrossesDitch
Location3.3 MI N I 20
RouteState Highway 471
Coordinates32.32399, -89.98321
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length30 ft (9.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2023)
Projected traffic11,000 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemYes

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 471 over Ditch built?

It was built in 1953, making it 72 years old in 2025.

What condition is SR 471 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 October 2024.

How much traffic does SR 471 over Ditch carry?

About 11,000 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is SR 471 over Ditch?

The structure is 30 ft (9.1 m) long with a longest span of 12 ft (3.7 m).

Who owns SR 471 over Ditch?

It is owned by the State Highway Agency.