Tr-250(zimmerman R over Trib Bureau CR
Lee County, Illinois · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr-250(zimmerman R over Trib Bureau CR in Lee County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1958, making it 67 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2017).
- Its listed owner is a town or township highway agency.
- It is one of 42 of the 373 inventoried bridges in Lee County rated poor (11.3%); 42 (11.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, would be posted or closed except for temporary shoring or other temporary measures (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated March 2024, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (41.67179, -89.07172)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 4 | 4 | Poor condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 32 ft |
| Location | 3 Mi N Lasalle Co L |
| NBI structure number | 052537000000000 |
| Condition class | Poor |
| Traffic status (item 41) | Open, would be posted or closed except for temporary shoring or other temporary measures |
| Last inspection (item 90) | March 2024 |
| 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 Lee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 52 & Il 2 & Il over Rock River | 2002 | 22,100 | Fair |
| I 39&US 51 over Steward Creek Branch | 1984 | 19,500 | Fair |
| I 39&US 51 over Dry Run Creek | 1982 | 19,100 | Fair |
| I 39&US 51 over Stream | 1984 | 19,100 | Fair |
| I 39&US 51 over Harmon Creek South | 1982 | 19,100 | Fair |
| I 39&US 51 over Willow Creek | 1983 | 18,700 | Fair |
All bridges nearby: Lee County, IL bridge conditions · every bridge in Lee County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.