Tr 104 over Spring Creek
Sangamon County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr 104 over Spring Creek in Sangamon County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, 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 2022).
- Its listed owner is a town or township highway agency.
- It is one of 261 of the 464 inventoried bridges in Sangamon County rated good (56.2%); 28 (6.0%) 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 2022, 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 → (39.78001, -89.81635)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 73 ft |
| Location | 3.5 Mi NW Curran |
| NBI structure number | 084349000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2022 |
| 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 Sangamon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Veterans/il 4 (SB) over Old Ic Rrr.o.w. | 1973 | 31,800 | Good |
| Veterans/il 4 (NB) over Old Ic RR R.o.w. | 1973 | 31,800 | Fair |
| Veterans / Il 4 (S over NS RR & Gateway W RR | 1990 | 31,800 | Good |
| Veterans / Il 4 (N over NS RR & Gateway W RR | 1990 | 31,800 | Fair |
| Veterans / Il 4 (S over I-72 / US 36 | 1973 | 28,400 | Fair |
| Veterans / Il 4 (N over I-72 / US 36 | 1973 | 28,400 | Fair |
All bridges nearby: Sangamon County, IL bridge conditions · every bridge in Sangamon County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.