Coltonville Road over Kishwaukee River
DeKalb County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Coltonville Road over Kishwaukee River in DeKalb County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2016, making it 9 years old at the 2025 inventory.
- It carries about 5,250 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 103 of the 262 inventoried bridges in DeKalb County rated good (39.3%); 33 (12.6%) 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 July 2022, 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 → (41.97541, -88.72802)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 229 ft |
| Location | 2370N 1135E |
| NBI structure number | 019307200000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2022 |
| Inspection interval (item 91) | 48 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 DeKalb County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-88 over Stream | 1972 | 24,900 | Fair |
| I-88 over Stream | 1972 | 24,900 | Good |
| I-88 over Stream | 1972 | 24,900 | Fair |
| Peace Rd over Br Kishwaukee River | 1995 | 15,000 | Fair |
| Annie Glidden Rd. over Watson Creek | 1971 | 13,600 | Poor |
| Peace Rd over Br Kishwaukee River | 1996 | 12,800 | Fair |
All bridges nearby: DeKalb County, IL bridge conditions · every bridge in DeKalb County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.