L-2771/heriot St over Tidal Creek
Charleston County, South Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- L-2771/heriot St over Tidal Creek in Charleston County, South 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 2009, making it 16 years old at the 2025 inventory.
- It carries about 600 vehicles a day (traffic count year 2023).
- Its listed owner is a city or municipal highway agency.
- It is one of 141 of the 339 inventoried bridges in Charleston County rated good (41.6%); 9 (2.7%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- It does not appear under this structure number in the 2024 inventory (a new or renumbered structure).
- Its most recent inspection on record is dated August 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 → (32.81778, -79.9575)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 1,439 ft |
| Location | In Charleston |
| NBI structure number | 000000000010518 |
| Condition class | Good |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.
Busiest bridges in Charleston County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-26 over RR NS Spur & Taylor St | 1964 | 170,100 | Fair |
| I-26 over Goose Creek | 1960 | 109,600 | Fair |
| I-26 over RR Csxt | 1963 | 94,100 | Poor |
| US 17 over RR Csxt & US 52 Bus | 2005 | 94,100 | Fair |
| US 17 over Marsh | 2005 | 94,100 | Good |
| US 17 over Cooper River Town Creek | 2005 | 94,100 | Good |
All bridges nearby: Charleston County, SC bridge conditions · every bridge in Charleston County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.