I-57 SB over Cn Railroad
Kankakee County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-57 SB over Cn Railroad in Kankakee County, Illinois, 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 2012, making it 13 years old at the 2025 inventory.
- It carries about 13,700 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 185 of the 344 inventoried bridges in Kankakee County rated fair (53.8%); 34 (9.9%) 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 March 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 → (41.16973, -87.85634)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 169 ft |
| Location | 0.3 Mi NW Il 50 |
| NBI structure number | 046014600000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 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 Kankakee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Il 17/FAP 41 over Kkk River & Pk Rd | 1957 | 23,600 | Fair |
| US45/52 (FAP330) over Soldiers Creek | 2001 | 19,100 | Fair |
| Il 50 Fap 840 over Soldier Creek | 2003 | 16,200 | Fair |
| Il 17 Fap 330 over Icg RR | 2004 | 15,900 | Fair |
| Armour Rd (FAU 617 over IL Central RR | 2024 | 14,600 | Good |
| Fai-57 SB over Ill 17 | 1955 | 14,450 | Poor |
All bridges nearby: Kankakee County, IL bridge conditions · every bridge in Kankakee County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.