Tr 1 over Unnamed Stream
Union County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr 1 over Unnamed Stream in Union 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 1993, making it 32 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 2020).
- Its listed owner is a town or township highway agency.
- It is one of 101 of the 188 inventoried bridges in Union County rated good (53.7%); 7 (3.7%) 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 March 2021, on a 48-month routine inspection cycle.
- 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 → (37.59592, -89.39315)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete frame |
| Length | about 25 ft |
| Location | 3 Mi NW Alto Pass |
| NBI structure number | 091319700000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2021 |
| Inspection interval (item 91) | 48 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Union County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fai 57 over Lick Creek | 1960 | 15,900 | Fair |
| I 57 over N.fork Lick Creek | 1960 | 15,900 | Fair |
| I 57 NB over Tr 276 N Lick CR Rd | 1959 | 7,950 | Fair |
| I 57 SB over Tr 276 N Lick CR Rd | 1959 | 7,950 | Fair |
| Fai 57 SB & US 51 over Fas 926-big Creek | 1959 | 6,700 | Poor |
| I 57 NB & US 51 NB over Fas 926-big Creek | 1959 | 6,700 | Poor |
All bridges nearby: Union County, IL bridge conditions · every bridge in Union County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.