Tr 490 over Sagamon River
McLean County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr 490 over Sagamon River in McLean County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1995, making it 30 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 2024).
- Its listed owner is a town or township highway agency.
- It is one of 379 of the 625 inventoried bridges in McLean County rated good (60.6%); 16 (2.6%) 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 → (40.4498, -88.68409)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 7 | Good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 54 ft |
| Location | 2.5 Mi W Arrowsmith |
| NBI structure number | 057321000000000 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in McLean County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-55/74 (NB & SB) over Unnamed Creek | 1991 | 42,100 | Fair |
| I-55 Busn Lp NB & over Sugar CR & Bike Path | 2000 | 41,100 | Fair |
| Fai 74 over Ditch | 1966 | 28,400 | Good |
| I-55 & FAS294 over Stream | 1976 | 25,400 | Fair |
| I-55 Busn Loop over US 51 at Bloomington | 1939 | 25,000 | Fair |
| I-55 Busn Loop over Norfolk Southern Railway | 1940 | 25,000 | Poor |
All bridges nearby: McLean County, IL bridge conditions · every bridge in McLean County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.