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US15 US501 over I40

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

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

US15 US501 over I40 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 substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1986, making it 39 years old at the 2025 inventory.
It carries about 20,500 vehicles a day (traffic count year 2021).
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 200 ft
Location	@ JCT.US15/501 & I40
NBI structure number	000000000630301
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