I0310 over Swamp
St. Charles Parish, Louisiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I0310 over Swamp in St. Charles Parish, Louisiana, 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 1992, making it 33 years old at the 2025 inventory.
- It carries about 56,783 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 49 of the 82 inventoried bridges in St. Charles Parish rated good (59.8%); 1 (1.2%) 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 → (30.00741, -90.29759)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 2,206 ft |
| Location | 0.01 M South of I-10 |
| NBI structure number | 024504503600005 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in St. Charles Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US0090 over Drain Ditch | 1999 | 49,920 | Good |
| US0090 over US 90 Turnarounds | 2013 | 49,920 | Good |
| US0090 over Davis Pond Diversion | 2002 | 49,920 | Good |
| US0090 over Drain Canal | 1953 | 49,920 | Fair |
| US0090 over Sellers Canal | 1953 | 49,920 | Fair |
| I0010 over Bonnet Carre Spillway | 1972 | 48,723 | Fair |
All bridges nearby: St. Charles Parish, LA bridge conditions · every bridge in St. Charles Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.