Tr 90 over Gilead Ck
Calhoun County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr 90 over Gilead Ck in Calhoun 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 1999, making it 26 years old at the 2025 inventory.
- It carries about 175 vehicles a day (traffic count year 2022).
- Its listed owner is a town or township highway agency.
- It is one of 35 of the 81 inventoried bridges in Calhoun County rated fair (43.2%); 4 (4.9%) 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 September 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 → (39.12357, -90.66654)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 52 ft |
| Location | 7.7 Mi S of Hamburg |
| NBI structure number | 007307000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| 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 Calhoun County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Illinois 100 over Poor Farm Hollow Crk | 1996 | 3,400 | Good |
| Park St In Hardin over Geske Hollow Creek | 2006 | 3,250 | Good |
| Ill 100 over Godar Hollow Creek | 1996 | 2,300 | Good |
| Il 100 over Mccauley Rd Creek | 2002 | 1,750 | Good |
| Ill 100 over Michael Creek | 1996 | 1,350 | Good |
| Il 100 over Crater Creek | 1996 | 1,350 | Good |
All bridges nearby: Calhoun County, IL bridge conditions · every bridge in Calhoun County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.