Il 83 NB over Il 56
DuPage County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Il 83 NB over Il 56 in DuPage County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 55,800 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 195 of the 345 inventoried bridges in DuPage County rated fair (56.5%); 26 (7.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated February 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 → (41.85735, -87.95791)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 208 ft |
| Location | Il 83 over Il 56 |
| NBI structure number | 022011800000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 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 Illinois department of transportation.
Busiest bridges in DuPage County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-88 over I-355 | 1989 | 169,900 | Fair |
| I-88 over I-355 NB to I-88 WB | 1989 | 169,900 | Fair |
| I- 55 over Madison St | 1959 | 150,000 | Fair |
| I-355 NB & SB over US-34 | 1989 | 147,200 | Fair |
| I-355 over Bn RR | 1989 | 147,200 | Good |
| I-355 NB & SB over Hitchcock Ave. | 1989 | 147,200 | Fair |
All bridges nearby: DuPage County, IL bridge conditions · every bridge in DuPage County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.