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SR 463 over I 55

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

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

SR 463 over I 55 in Madison County, Mississippi, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2001, making it 24 years old at the 2025 inventory.
It carries about 36,000 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 161 of the 311 inventoried bridges in Madison County rated good (51.8%); 10 (3.2%) are rated poor.
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


Structure	Continuous steel multiple box beam
Length	about 196 ft
Location	SR 463 over I 55
NBI structure number	310046304500150
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 55 over Purple Creek	1979	104,000	Good
I 55 over US 51 & Cnic RR	1985	47,000	Fair
I 55 over US 51 & Cnic RR	1985	47,000	Fair
I 55 over I 220E to I 55 North	1979	47,000	Fair
I 55 over I 220E to I 55 North	1979	47,000	Fair
I 220 over Ditch	1977	47,000	Good