Il 40 Fap 646 over Coal Creek
Bureau County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Il 40 Fap 646 over Coal Creek in Bureau 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 1986, making it 39 years old at the 2025 inventory.
- It carries about 1,100 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 173 of the 374 inventoried bridges in Bureau County rated fair (46.3%); 60 (16.0%) 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 January 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 → (41.30426, -89.68371)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 5 | Fair condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 118 ft |
| Location | 1.2 Mi S of Buda |
| NBI structure number | 006014500000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Bureau County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80 EB over Spring Creek | 2010 | 12,200 | Good |
| I-80 WB over Spring Creek | 2009 | 12,200 | Fair |
| I-80 EB over Il Railnet | 2010 | 12,200 | Fair |
| I-80 WB over Il Railnet | 2009 | 12,200 | Good |
| I-80 EB over Brush Creek & Tr 352 | 2011 | 11,450 | Fair |
| I-80 WB over Brush Creek & Tr 352 | 2010 | 11,450 | Good |
All bridges nearby: Bureau County, IL bridge conditions · every bridge in Bureau County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.