Fas 575 over Clary Creek
Cass County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fas 575 over Clary Creek in Cass 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 1958, making it 67 years old at the 2025 inventory.
- It carries about 600 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 39 of the 76 inventoried bridges in Cass County rated fair (51.3%); 13 (17.1%) 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 2023, 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 → (40.08372, -89.99821)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 132 ft |
| Location | 6 Mi N Newmansville |
| NBI structure number | 009300000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Cass County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Il 125 over BNSF RR | 1956 | 6,600 | Fair |
| US 67 / Il 100 over Illinois River | 1955 | 5,600 | Poor |
| Il 125 over Lost Creek | 2001 | 3,900 | Good |
| Il 125 over Trib to Lost Creek | 2009 | 3,500 | Good |
| Il 125 over Trib to Lost Creek | 2009 | 3,500 | Good |
| Il 78 over Prairie Creek | 1998 | 2,050 | Good |
All bridges nearby: Cass County, IL bridge conditions · every bridge in Cass County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.