I-840 over SR3300
Guilford County, North Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-840 over SR3300 in Guilford County, North Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2023, making it 2 years old at the 2025 inventory.
- It carries about 31,580 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 427 of the 744 inventoried bridges in Guilford County rated good (57.4%); 33 (4.4%) 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.
View this bridge on a map → (36.1388, -79.7975)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 9 | Excellent condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 110 ft |
| Location | 1.3 Mi W Jct SR2523 |
| NBI structure number | 000000000811247 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Carolina department of transportation.
Busiest bridges in Guilford County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I40 85 US29 70 220 over South Buffalo Creek | 1955 | 120,000 | Fair |
| I40 US421 over NC68 | 1981 | 120,000 | Fair |
| I40 & I85 SR3143 over North Alamance Creek | 1954 | 119,000 | Fair |
| I40 I85 over Rock Creek | 1954 | 119,000 | Fair |
| I40 I85 Bus US29 over Branch South Buffalo Crk | 1954 | 118,000 | Fair |
| I40 over SR4121 | 1976 | 115,000 | Fair |
All bridges nearby: Guilford County, NC bridge conditions · every bridge in Guilford County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.