US 136 over Prairie Creek
Logan County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 136 over Prairie Creek in Logan County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1937 and reconstructed in 2008, making it 88 years old at the 2025 inventory.
- It carries about 2,300 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 183 of the 292 inventoried bridges in Logan County rated fair (62.7%); 27 (9.2%) 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 → (40.30742, -89.49186)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 5 | Fair condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 159 ft |
| Location | 1.9M W I-155 |
| NBI structure number | 054002500000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Logan County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-55 over Hurlbut Creek | 1974 | 34,900 | Fair |
| I 55 & E&w Fr Rds over Wolf Creek | 1944 | 33,125 | Fair |
| I-55 over Drainage Ditch | 1974 | 32,400 | Fair |
| I-55 over Clear Creek | 1976 | 21,600 | Fair |
| I-55 over Drainage Ditch | 1974 | 21,500 | Fair |
| I-55 over Trib Lake Fork | 1922 | 17,450 | Fair |
All bridges nearby: Logan County, IL bridge conditions · every bridge in Logan County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.