Ch 4 over Spring Branch
Bond County, Illinois · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ch 4 over Spring Branch in Bond County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1973, making it 52 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 18 of the 162 inventoried bridges in Bond County rated poor (11.1%); 18 (11.1%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (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 → (38.80761, -89.28117)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Concrete channel beam |
| Length | about 36 ft |
| Location | 4.5M N Keysport |
| NBI structure number | 003301800000000 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 24 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 Bond County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fai 70 WB over Trib to Sugar Creek | 1965 | 13,450 | Good |
| Fai 70 EB over Trib to Sugar Creek | 1965 | 13,450 | Fair |
| Fai 70 WB over W Br Shoal Creek | 1967 | 13,100 | Poor |
| Fai 70 EB over W Br Shoal Creek | 1967 | 13,100 | Poor |
| Fai 70 EB over Mid Fk Shoal Creek | 1967 | 13,100 | Poor |
| Fai 70 WB over Mid Fk Shoal Creek | 1967 | 13,100 | Poor |
All bridges nearby: Bond County, IL bridge conditions · every bridge in Bond County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.