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US 45 over Old 45 Marion Road

Lauderdale County, Mississippi · rated Fair in the 2025 National Bridge Inventory

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

US 45 over Old 45 Marion Road in Lauderdale County, Mississippi, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1973, making it 52 years old at the 2025 inventory.
It carries about 11,000 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 206 of the 475 inventoried bridges in Lauderdale County rated fair (43.4%); 28 (5.9%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous concrete multiple box beam
Length	about 443 ft
Location	Int of Old New US 45
NBI structure number	210004503807910
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 20/I 59 over Grand Ave	1973	56,000	Fair
I 20/I 59 over SR 145	1957	56,000	Fair
I 20/I 59 over US 11 Norfolk S RR	1974	49,000	Fair
I 20/I 59 over Sowashee Creek	1973	49,000	Fair
I 20/I 59 over Kcs RR	1973	48,000	Fair
I 20/I 59 over Stream	1949	41,000	Good