I- 90 94 Dan Ryan over Sanitary Sewer
Cook County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I- 90 94 Dan Ryan over Sanitary Sewer in Cook County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1961, making it 64 years old at the 2025 inventory.
- It carries about 312,400 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 1,004 of the 1,722 inventoried bridges in Cook County rated fair (58.3%); 246 (14.3%) 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 January 2025, 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 → (41.8238, -87.63087)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 29 ft |
| Location | Just North of 39TH |
| NBI structure number | 016262500000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2025 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Cook County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I- 80 94 Kingery over Bikeway Ave (RR Ave) | 2004 | 254,100 | Fair |
| I- 90 94 Ryan Elev over 15TH to 16TH Sts | 1962 | 247,500 | Fair |
| I- 90 94 Ryan Elev over 16TH to 18TH Sts | 1962 | 247,500 | Fair |
| I- 90 94 Ryan Elev over Canal to Stewart Sts | 1962 | 245,500 | Poor |
| I- 90 94 Elev Exp over Stewart Ave to 28 Pl | 1962 | 245,500 | Fair |
| I- 90 94 Dan Ryan over Maxwell to 15TH St | 1962 | 240,200 | Fair |
All bridges nearby: Cook County, IL bridge conditions · every bridge in Cook County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.