Brisbin RD/MS0020 over West Aux Sable Ck
Kendall County, Illinois · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Brisbin RD/MS0020 over West Aux Sable Ck in Kendall 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 1971, making it 54 years old at the 2025 inventory.
- It carries about 175 vehicles a day (traffic count year 2024).
- Its listed owner is a city or municipal highway agency.
- It is one of 15 of the 131 inventoried bridges in Kendall County rated poor (11.5%); 15 (11.5%) 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 November 2023, 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 → (41.52779, -88.36591)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 48 ft |
| Location | 1 Mi N of Ill Rt 52 |
| NBI structure number | 047308500000000 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 24 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 Kendall County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ill 47 over Fox River | 1984 | 24,800 | Fair |
| US 34/FAP 311 over Waubansee Creek | 2002 | 24,700 | Fair |
| US 34 over Blackberry Creek | 2019 | 22,400 | Good |
| US 34 over Waubansee Creek | 2001 | 22,300 | Fair |
| US 34 over Rob Roy Creek | 2019 | 18,700 | Good |
| Orchard Rd over Gates Cr/trib to Fox | 2000 | 18,700 | Fair |
All bridges nearby: Kendall County, IL bridge conditions · every bridge in Kendall County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.