Duncan Rd(fau 7155 over Phinney Branch
Champaign County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Duncan Rd(fau 7155 over Phinney Branch in Champaign County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 7,100 vehicles a day (traffic count year 2024).
- Its listed owner is a city or municipal highway agency.
- It is one of 237 of the 728 inventoried bridges in Champaign County rated fair (32.6%); 59 (8.1%) 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 → (40.09048, -88.2952)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 75 ft |
| Location | S. of StonyBrook Dr. |
| NBI structure number | 010314700000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Champaign County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-74 over Market St(fau 7169) | 1957 | 48,900 | Good |
| I-74 over CN Railwy & TR 158/Oak S | 1956 | 48,900 | Good |
| I-74 over US 45(FAP 800) | 1956 | 41,900 | Poor |
| I-57 over Copper Slough | 1965 | 34,400 | Good |
| FAI 74 & Ramp G over Copper Slough | 2023 | 31,500 | Good |
| I-74 over Stream | 1960 | 30,400 | Fair |
All bridges nearby: Champaign County, IL bridge conditions · every bridge in Champaign County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.