Maple Rd/ Tr 177 over TR1B to Silver Ck
Madison County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Maple Rd/ Tr 177 over TR1B to Silver Ck in Madison County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1973, making it 52 years old at the 2025 inventory.
- It carries about 150 vehicles a day (traffic count year 2021).
- Its listed owner is a town or township highway agency.
- It is one of 247 of the 524 inventoried bridges in Madison County rated good (47.1%); 46 (8.8%) are rated poor.
- 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 → (38.85996, -89.84798)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 38 ft |
| Location | 1.5MI S Hamel |
| NBI structure number | 060321400000000 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Madison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fai 270 over Mississippi River | 1966 | 46,200 | Fair |
| I-270 EB & WB over Chain of Rocks Canal | 2014 | 46,200 | Good |
| Fai 270 EB over Mississippi River | 2024 | 46,200 | Good |
| Fai 270 over Water Main | 1964 | 46,200 | Good |
| I-55/70 over Brush Creek | 1962 | 46,000 | Fair |
| Fai 70 over Canteen Ck | 1939 | 45,600 | Good |
All bridges nearby: Madison County, IL bridge conditions · every bridge in Madison County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.