Ch 3 over Mill Creek
Union County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ch 3 over Mill Creek in Union County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 250 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 80 of the 188 inventoried bridges in Union County rated fair (42.6%); 7 (3.7%) 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 March 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 → (37.34071, -89.2495)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete channel beam |
| Length | about 115 ft |
| Location | 0.14M.E of Ill 127 |
| NBI structure number | 091311100000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2023 |
| 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 Union County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fai 57 over Lick Creek | 1960 | 15,900 | Fair |
| I 57 over N.fork Lick Creek | 1960 | 15,900 | Fair |
| I 57 NB over Tr 276 N Lick CR Rd | 1959 | 7,950 | Fair |
| I 57 SB over Tr 276 N Lick CR Rd | 1959 | 7,950 | Fair |
| Fai 57 SB & US 51 over Fas 926-big Creek | 1959 | 6,700 | Poor |
| I 57 NB & US 51 NB over Fas 926-big Creek | 1959 | 6,700 | Poor |
All bridges nearby: Union County, IL bridge conditions · every bridge in Union County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.