Il 104 over Norfolk Southern Ry.
Morgan County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Il 104 over Norfolk Southern Ry. in Morgan 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 1961 and reconstructed in 2003, making it 64 years old at the 2025 inventory.
- It carries about 2,150 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 104 of the 234 inventoried bridges in Morgan County rated fair (44.4%); 17 (7.3%) 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 July 2023, on a 48-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 → (39.7453, -90.27339)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 144 ft |
| Location | .5M S Il 78 Jacksvl |
| NBI structure number | 069001900000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 48 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Morgan County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Bl72/il104/morton over Town Brook | 1952 | 16,300 | Fair |
| Fai 72 over N Fk Mauvaise Terre | 1976 | 14,500 | Fair |
| Fai 72 over Mauvaise Terre CR Br | 1974 | 14,500 | Good |
| Bus I72/IL104/MORT over Mauvaise Terre Creek | 1957 | 10,400 | Fair |
| Il 267/US 67/BL 67 over I-72/US 36 | 1975 | 9,100 | Fair |
| Il 267 over Trib Mauvaise Terre | 1989 | 9,100 | Good |
All bridges nearby: Morgan County, IL bridge conditions · every bridge in Morgan County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.