Il 125 over Lost Creek
Cass County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Il 125 over Lost Creek in Cass County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2001, making it 24 years old at the 2025 inventory.
- It carries about 3,900 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 24 of the 76 inventoried bridges in Cass County rated good (31.6%); 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 December 2023, on a 48-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (39.99025, -90.34816)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 160 ft |
| Location | Bluff SPRG/5M E US67 |
| NBI structure number | 009050300000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2023 |
| Inspection interval (item 91) | 48 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 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 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 |
| Fas 579 over Mannel Branch | 1964 | 1,900 | Fair |
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.