SR1937 over Mill Swamp
Duplin County, North Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR1937 over Mill Swamp in Duplin County, North Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2016, making it 9 years old at the 2025 inventory.
- It carries about 1,500 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 69 of the 208 inventoried bridges in Duplin County rated good (33.2%); 15 (7.2%) 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 → (34.76152, -77.99394)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 46 ft |
| Location | 0.5 Mi E Jct US117 |
| NBI structure number | 000000000610384 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Carolina department of transportation.
Busiest bridges in Duplin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I40 over Stewarts Creek | 1988 | 23,500 | Good |
| I40 over Maxwell Creek | 1988 | 19,500 | Fair |
| I40 over Beaverdam Branch | 1988 | 19,500 | Good |
| I40E over NC11 | 1986 | 18,500 | Fair |
| NC41 over Little Rockfish Creek | 1969 | 13,000 | Fair |
| I40 Ebl over Seaboard Coastline RR | 1987 | 11,750 | Good |
All bridges nearby: Duplin County, NC bridge conditions · every bridge in Duplin County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.