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I 20 SW Ramp over Ditch

Rankin County, Mississippi · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

I 20 SW Ramp over Ditch in Rankin County, Mississippi, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
It was built in 1983, making it 42 years old at the 2025 inventory.
It carries about 12,000 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 214 of the 378 inventoried bridges in Rankin County rated good (56.6%); 17 (4.5%) are rated poor.
Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
Its condition class and component ratings are unchanged from the 2024 inventory.
Its most recent inspection on record is dated December 2024, on a 24-month routine inspection cycle.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings

Component	Rating (2024)	Rating (2025)	FHWA scale meaning
Culvert	7	7	Good condition


Structure	Concrete culvert
Length	about 26 ft
Location	SW Exit Ramp Greenfield
NBI structure number	170002006105490
Condition class	Good
Traffic status (item 41)	Open, no restriction
Last inspection (item 90)	December 2024
Inspection interval (item 91)	24 months
Scour (item 113)	8: foundations stable, scour above the top of the footing

Source: FHWA National Bridge Inventory, 2025 data as reported by the Mississippi department of transportation.

Bridge	Built	Vehicles/day	Condition
I 20 over Conway Slough	1965	77,000	Good
I 20 over Creek	1963	62,000	Good
I 55 over US 80/KCS RR	1967	56,500	Good
US 49 & Frt Rds over Ditch	1970	56,000	Good
US 49 over Kcs RR	2008	56,000	Fair
US 49 over Conway Slough	1967	56,000	Good