Tr 8 Sullivant over Mackinaw River
Ford County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr 8 Sullivant over Mackinaw River in Ford County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 2023).
- Its listed owner is a town or township highway agency.
- It is one of 141 of the 302 inventoried bridges in Ford County rated fair (46.7%); 24 (7.9%) 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 April 2023, 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 → (40.56048, -88.44228)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 58 ft |
| Location | 1110N 100E |
| NBI structure number | 027322200000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 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 Ford County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fai 57 over Stream | 1968 | 17,600 | Fair |
| Fai 57 Sbl over Big Four Ditch | 1968 | 10,550 | Fair |
| Fai 57 Nbl over Big Four Ditch | 1968 | 10,550 | Poor |
| Il 9/FAP 697 over Il Cent. RR | 2001 | 5,750 | Fair |
| Ill 9 over Fai 57 | 1969 | 5,050 | Fair |
| Ill 47 over Drummer Creek | 1998 | 3,850 | Good |
All bridges nearby: Ford County, IL bridge conditions · every bridge in Ford County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.