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NC147S. over US15/501N.BUS

Durham County, North Carolina · rated Fair in the 2025 National Bridge Inventory

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

NC147S. over US15/501N.BUS in Durham County, North Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1968, making it 57 years old at the 2025 inventory.
It carries about 51,500 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 190 of the 313 inventoried bridges in Durham County rated fair (60.7%); 10 (3.2%) 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	Steel stringer or multi-beam girder
Length	about 147 ft
Location	0.1 MI.S.JCT.US15/501 Sbl
NBI structure number	000000000630164
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I40 over SR1973	1995	147,000	Fair
I40 Wbl over NC55	1985	107,000	Fair
I85 & US15 over Ellerbee Creek	1960	104,000	Fair
I40 over Northeast Creek	1985	101,000	Fair
I85N over NC55	2005	80,000	Good
I85 US15 US70 over SR1671	2001	80,000	Good