W 56TH Str WB over I-465 Nb/sb
Marion County, Indiana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- W 56TH Str WB over I-465 Nb/sb in Marion County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1995, making it 30 years old at the 2025 inventory.
- It carries about 14,214 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 475 of the 969 inventoried bridges in Marion County rated fair (49.0%); 46 (4.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 7 to 6.
- Its most recent inspection on record is dated June 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (39.85295, -86.27628)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 237 ft |
| Location | 00.78 S I-65 |
| NBI structure number | 050731 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 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 Indiana department of transportation.
Busiest bridges in Marion County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-65 over 26TH Street | 1968 | 167,273 | Good |
| I-65 over 29TH Street | 1968 | 167,273 | Good |
| I-65 over West 30TH Street | 1968 | 167,273 | Fair |
| I-65 over Dr Ml King Drive | 1968 | 164,000 | Good |
| I-70 over Belmont Avenue | 1967 | 163,150 | Fair |
| I-70 over Sherman Drive CSX RR | 2007 | 157,928 | Good |
All bridges nearby: Marion County, IN bridge conditions · every bridge in Marion County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.