US 150 over Lake Storey
Knox County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 150 over Lake Storey in Knox County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1928 and reconstructed in 1959, making it 97 years old at the 2025 inventory.
- It carries about 3,250 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 123 of the 304 inventoried bridges in Knox County rated fair (40.5%); 32 (10.5%) are rated poor.
- 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 → (40.98804, -90.38287)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Concrete slab |
| Length | about 33 ft |
| Location | 1 Mi N of US 34 |
| NBI structure number | 048002900000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Knox County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fai 74 over Spoon Riv Tributary | 1968 | 15,400 | Fair |
| I-74 over Stream | 1967 | 15,000 | Fair |
| US 34 EB over US 150 | 1965 | 12,900 | Fair |
| US 150 (main St) over Cedar Creek BNSF RR | 2012 | 10,300 | Fair |
| EB I-74 over Main (fau 6800) | 1963 | 9,500 | Fair |
| WB I-74 over E. Main St | 1963 | 9,500 | Fair |
All bridges nearby: Knox County, IL bridge conditions · every bridge in Knox County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.