I85N over NC55
Durham County, North Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I85N over NC55 in Durham County, North Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2005, making it 20 years old at the 2025 inventory.
- It carries about 80,000 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 113 of the 313 inventoried bridges in Durham County rated good (36.1%); 10 (3.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2023, on a 24-month routine inspection cycle.
- 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.
View this bridge on a map → (36.01409, -78.88727)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 250 ft |
| Location | 1.1 Mi. N. Jct. US501 |
| NBI structure number | 000000000630167 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Carolina department of transportation.
Busiest bridges in Durham County
| 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 |
| I85 US15 US70 over SR1671 | 2001 | 80,000 | Good |
| I85 US15 over Norfolk & Western RR | 2001 | 80,000 | Good |
All bridges nearby: Durham County, NC bridge conditions · every bridge in Durham County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.