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US21 NB Ramp over Fourth Creek

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

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

US21 NB Ramp over Fourth Creek in Iredell 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 2014, making it 11 years old at the 2025 inventory.
It carries about 7,400 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 97 of the 333 inventoried bridges in Iredell County rated good (29.1%); 48 (14.4%) 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 224 ft
Location	.0.1mi.e.jct.us21
NBI structure number	000000000970566
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I77 over Lake Norman	2018	63,500	Good
I77 over Ut to Fourth Creek	1957	58,000	Fair
I-77 over Duck Creek	1970	56,500	Fair
I77 over Cornelius Creek	1966	54,000	Fair
I-40 over Ut to Fourth Creek	2022	41,500	Good
I77 over Fifth Creek	1973	38,500	Fair