Fas-805 (sbi-142) over Big Slough
Lawrence County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fas-805 (sbi-142) over Big Slough in Lawrence 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 2000, making it 25 years old at the 2025 inventory.
- It carries about 900 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 69 of the 185 inventoried bridges in Lawrence County rated good (37.3%); 42 (22.7%) 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 → (38.59041, -87.68291)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 37 ft |
| Location | .7 Mi E Ill-1 |
| NBI structure number | 051200500000000 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Lawrence County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap-327wb (US-50) over Fas-1827 | 1958 | 7,200 | Poor |
| Fap-327eb (US-50) over Fas-1827 | 1958 | 7,200 | Fair |
| Fap-327eb (US 50) over Beaver Pond Ditch | 1957 | 7,200 | Poor |
| Fap-327wb (US-50) over Beaver Pond Ditch | 1957 | 7,200 | Poor |
| Fap-327eb (US-50) over Allison Ditch No 1 | 1957 | 7,200 | Poor |
| Fap-327wb (US-50) over Allison Ditch No 1 | 1957 | 7,200 | Poor |
All bridges nearby: Lawrence County, IL bridge conditions · every bridge in Lawrence County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.