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Hamilton Mill Road over SR 419 (I-985 US 23)

Gwinnett County, Georgia · rated Good in the 2025 National Bridge Inventory

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

Hamilton Mill Road over SR 419 (I-985 US 23) in Gwinnett County, Georgia, 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 1968 and reconstructed in 1996, making it 57 years old at the 2025 inventory.
It carries about 18,400 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 285 of the 320 inventoried bridges in Gwinnett County rated good (89.1%); 0 (0.0%) 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 stringer or multi-beam girder
Length	about 212 ft
Location	East Side of Buford
NBI structure number	000000013500320
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-85 over Bromolow Creek	1958	307,000	Good
I-85 over Beaver Ruin Creek	1959	303,000	Good
I-85 Sbl over Sweetwater Creek	1958	255,000	Good
I-85 NB SB and Cd over Sugarloaf Parkway	1999	172,000	Good
I-85 NB & SB Nbcd over Fork Creek	1990	170,000	Good
I-85 Southbound over SR 419 NB (I-985)	2018	162,000	Good