Lake Argyle Park over Stream
McDonough County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Lake Argyle Park over Stream in McDonough 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 2011, making it 14 years old at the 2025 inventory.
- It carries about 75 vehicles a day (traffic count year 2021).
- It is one of 112 of the 210 inventoried bridges in McDonough County rated good (53.3%); 13 (6.2%) 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 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 → (40.46513, -90.79628)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 33 ft |
| Location | Lake Argyle St Pk |
| NBI structure number | 055200900000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2023 |
| 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 McDonough County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 67 over Town Creek Fork | 1988 | 6,350 | Fair |
| NB US 67 over Farmers Fork | 2012 | 6,350 | Fair |
| SB US 67 over Farmers Fork | 2012 | 6,350 | Fair |
| SB US 67 over E Fork Lamoine River | 1988 | 6,050 | Fair |
| NB US 67 over E Fork Lamoine River | 1988 | 6,050 | Fair |
| SB US 67 over E Fork Crooked Creek | 1996 | 4,850 | Fair |
All bridges nearby: McDonough County, IL bridge conditions · every bridge in McDonough County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.