Illinois 100 over Poor Farm Hollow Crk
Calhoun County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Illinois 100 over Poor Farm Hollow Crk in Calhoun County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1996, making it 29 years old at the 2025 inventory.
- It carries about 3,400 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 42 of the 81 inventoried bridges in Calhoun County rated good (51.9%); 4 (4.9%) 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 February 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 → (39.17359, -90.61306)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 35 ft |
| Location | Hardin High Sch MP.9 |
| NBI structure number | 007200500000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 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 Calhoun County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Park St In Hardin over Geske Hollow Creek | 2006 | 3,250 | Good |
| Ill 100 over Godar Hollow Creek | 1996 | 2,300 | Good |
| Il 100 over Mccauley Rd Creek | 2002 | 1,750 | Good |
| Ill 100 over Michael Creek | 1996 | 1,350 | Good |
| Il 100 over Crater Creek | 1996 | 1,350 | Good |
| Il 100 over Crawford Creek | 2009 | 1,250 | Good |
All bridges nearby: Calhoun County, IL bridge conditions · every bridge in Calhoun County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.