Tr 323 over Parker Run
Henry County, Illinois · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr 323 over Parker Run in Henry County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1962, making it 63 years old at the 2025 inventory.
- It carries about 75 vehicles a day (traffic count year 2020).
- Its listed owner is a town or township highway agency.
- It is one of 42 of the 329 inventoried bridges in Henry County rated poor (12.8%); 42 (12.8%) are rated poor.
- 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 → (41.23857, -90.42282)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 4 | Poor condition |
| Superstructure | 4 | Poor condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 60 ft |
| Location | 2.5 Mi N New Windsor |
| NBI structure number | 037315900000000 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Henry County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80 over Drainage Ditch | 1962 | 17,900 | Fair |
| I 80 over Oat Creek | 1961 | 17,300 | Good |
| I74 & I280 over Turner Creek | 1962 | 15,000 | Fair |
| I-74 & 280 over Drainage Ditch | 1962 | 15,000 | Fair |
| I-74 over Mud Creek | 1962 | 15,000 | Good |
| I 74 over Stream | 1962 | 15,000 | Fair |
All bridges nearby: Henry County, IL bridge conditions · every bridge in Henry County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.