US 20 over Hampshire Creek
Kane County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 20 over Hampshire Creek in Kane County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2019, making it 6 years old at the 2025 inventory.
- It carries about 8,600 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 153 of the 339 inventoried bridges in Kane County rated good (45.1%); 24 (7.1%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated January 2023, on a 48-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (42.15367, -88.51791)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 37 ft |
| Location | .01M S of Mchenry Co |
| NBI structure number | 045210000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2023 |
| Inspection interval (item 91) | 48 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 Kane County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-88 WB over Fox R - RR - Il 25 | 1958 | 86,200 | Fair |
| I-88 EB over Fox R - RR - Il 25 | 2008 | 86,200 | Fair |
| I-90 over S Br Kishwaukee Riv | 2014 | 76,200 | Good |
| I-90 over Stream | 1958 | 58,700 | Good |
| I-90 over Sleepy Hollow Rd | 2014 | 52,600 | Good |
| I-90 over Sleepy Hollow Rd | 2014 | 52,600 | Good |
All bridges nearby: Kane County, IL bridge conditions · every bridge in Kane County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.