I-74 Northbound over I-40BUS/US 421
Forsyth County, North Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-74 Northbound over I-40BUS/US 421 in Forsyth 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 2020, making it 5 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 207 of the 462 inventoried bridges in Forsyth County rated good (44.8%); 44 (9.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: deck 8 to 7, substructure 8 to 7.
- Its most recent inspection on record is dated March 2024, 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 → (36.11287, -80.13009)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 215 ft |
| Location | 0.7 Mi. N.jct.us 421 Ramp |
| NBI structure number | 000000000670678 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| 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 Forsyth County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I40 & US311 over Clemmonsville Road | 1980 | 112,000 | Fair |
| I40 Ebl over Salem Creek | 1992 | 98,000 | Good |
| I40 Ebl over NC150 Ramp | 1992 | 98,000 | Good |
| I40 over Bottom Branch | 1992 | 98,000 | Fair |
| US52 US311 over US311 | 1963 | 90,000 | Poor |
| I40 over Burke Creek | 1991 | 82,500 | Fair |
All bridges nearby: Forsyth County, NC bridge conditions · every bridge in Forsyth County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.