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NC18 over Crab Creek

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

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

NC18 over Crab Creek in Alleghany 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 2007, making it 18 years old at the 2025 inventory.
It carries about 1,700 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 51 of the 117 inventoried bridges in Alleghany County rated good (43.6%); 17 (14.5%) 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	Prestressed concrete multiple box beam
Length	about 164 ft
Location	.3 MI.S.JCT.SR1450
NBI structure number	000000000050038
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US21 over Little River	1920	7,200	Fair
US21 over Brush Creek	1997	3,700	Good
US21 over Glade Creek	2016	3,700	Good
US21 over Laurel Branch	2016	3,300	Good
SR1206 over Bledsoe Creek	1997	3,100	Good
SR1206 over Bledsoe Creek	1997	3,100	Good