Tr 423 A over Wolf Creek
Shelby County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr 423 A over Wolf Creek in Shelby 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 2004, making it 21 years old at the 2025 inventory.
- It carries about 150 vehicles a day (traffic count year 2024).
- Its listed owner is a town or township highway agency.
- It is one of 184 of the 335 inventoried bridges in Shelby County rated good (54.9%); 26 (7.8%) 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 March 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 → (39.24487, -88.64452)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 27 ft |
| Location | 1.5 Mi SW Stewardson |
| NBI structure number | 087354000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 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 Shelby County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 325 (il 16) over Swafford Branch | 1991 | 8,200 | Fair |
| Fap 325(IL 16) over Kaskaskia River | 1975 | 6,500 | Fair |
| Fap 325(ILL 16) over Robinson Creek | 1967 | 5,200 | Fair |
| Fap 325(ILL 16) over Stream | 1924 | 4,800 | Fair |
| US 51 (fap 322) over Long Grove CR. | 2002 | 4,800 | Fair |
| US 51 (fap 322) over Long Grove CR. | 2002 | 4,800 | Fair |
All bridges nearby: Shelby County, IL bridge conditions · every bridge in Shelby County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.