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US421 Ramp over Hamon Mill (smith) Creek

Forsyth County, North Carolina · rated Good in the 2025 National Bridge Inventory

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

US421 Ramp over Hamon Mill (smith) Creek in Forsyth County, North Carolina, 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 2020, making it 5 years old at the 2025 inventory.
It carries about 4,750 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 207 of the 462 inventoried bridges in Forsyth County rated good (44.8%); 44 (9.5%) 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 prestressed concrete stringer or multi-beam girder
Length	about 263 ft
Location	0.3M. S. Jct. I-74 S.
NBI structure number	000000000670676
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I40 & US311 over Clemmonsville Road	1980	112,000	Fair
I40 Ebl over Salem Creek	1992	98,000	Good
I40 Ebl over NC150 Ramp	1992	98,000	Good
I40 over Bottom Branch	1992	98,000	Fair
US52 US311 over US311	1963	90,000	Poor
I40 over Burke Creek	1991	82,500	Fair