Interstate 57 SB over 7TH St
Franklin County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Interstate 57 SB over 7TH St in Franklin County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2012, making it 13 years old at the 2025 inventory.
- It carries about 18,600 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 63 of the 310 inventoried bridges in Franklin County rated fair (20.3%); 9 (2.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 8 to 7, substructure 8 to 7.
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (37.90829, -88.94642)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 8 | 7 | Good condition |
| Substructure | 8 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 184 ft |
| Location | at Ncl W. Frankfort |
| NBI structure number | 028008000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Franklin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 57 over Tr 213 Linn Rd | 1962 | 37,200 | Fair |
| I 57 over Drain Ditch (rend L) | 1963 | 35,700 | Fair |
| I-57 NB over Pond Creek | 2022 | 19,900 | Fair |
| I-57 SB over Pond Creek | 2022 | 19,900 | Fair |
| Interstate 57 NB over 7TH St | 2012 | 18,600 | Fair |
| Interstate 57 SB over UP RR | 2013 | 18,600 | Good |
All bridges nearby: Franklin County, IL bridge conditions · every bridge in Franklin County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.