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SR 23 over N Prong St Marys River

Charlton County, Georgia · rated Fair in the 2025 National Bridge Inventory

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

SR 23 over N Prong St Marys River in Charlton County, Georgia, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1955, making it 70 years old at the 2025 inventory.
It carries about 2,710 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 24 of the 71 inventoried bridges in Charlton County rated fair (33.8%); 1 (1.4%) 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 steel stringer or multi-beam girder
Length	about 219 ft
Location	at the Florida State Line
NBI structure number	000000004900120
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 1 / SR 4 over Clay Branch	1955	10,500	Good
US 1 (nbl)/ SR 4 over Lake Deborah Trib.	1954	8,900	Fair
US 1 (nbl)/ SR 4 over Lake Deborah Trib.	1955	8,900	Fair
US 1 / SR 4 over Lake Deborah Trib.	1954	8,900	Good
US 1 (nbl) / SR 4 over Spanish Creek	1947	6,650	Good
US 1 (nbl) / SR 4 over Little Spanish Creek	1947	6,070	Good