Fas 1478 over I-74 at Leroy
McLean County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fas 1478 over I-74 at Leroy in McLean 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 1970, making it 55 years old at the 2025 inventory.
- It carries about 6,150 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 230 of the 625 inventoried bridges in McLean County rated fair (36.8%); 16 (2.6%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 6 to 5.
- Its most recent inspection on record is dated April 2024, 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 → (40.33854, -88.76517)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 5 | Fair condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 225 ft |
| Location | 13.63 Mi E of US 51 |
| NBI structure number | 057013200000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in McLean County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-55/74 (NB & SB) over Unnamed Creek | 1991 | 42,100 | Fair |
| I-55 Busn Lp NB & over Sugar CR & Bike Path | 2000 | 41,100 | Fair |
| Fai 74 over Ditch | 1966 | 28,400 | Good |
| I-55 & FAS294 over Stream | 1976 | 25,400 | Fair |
| I-55 Busn Loop over US 51 at Bloomington | 1939 | 25,000 | Fair |
| I-55 Busn Loop over Norfolk Southern Railway | 1940 | 25,000 | Poor |
All bridges nearby: McLean County, IL bridge conditions · every bridge in McLean County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.