Low clearance bridges on I-39
15 spots where I-39 has less than 16 ft of clearance, in the order you drive them from south to north. The lowest is 15 ft 1 in in Illinois, .5 mi E of US 51.
Posted signs and your permit come first. These are the clearances states reported to the federal National Bridge Inventory in 2025. Repaving, snow and new work can lower them.
Illinois · 13 under 16 ft
| Clearance | Where | County |
|---|---|---|
| 15 ft 10 in | Under US 34 FAP 587 · Interchange US 34 & 1-39 · Map | LaSalle County |
| 15 ft 10 in | Under Lee Road · 2 mi N of US 30 · Map | Lee County |
| 15 ft 10 in | Under Ill 64 · 4 mi W of Dekalb Co · Map | Ogle County |
| 15 ft 10 in | Under TR 73A-MCNEAL Road · 2.5 mi N of Ill 72 · Map | Ogle County |
| 15 ft 1 in | Under Mulford Road · .5 mi E of US 51 · Map | Winnebago County |
| 15 ft 3 in | Under I-90 Ramp · .25 mi N of 20 Br · Map | Winnebago County |
| 15 ft 1 in | Under Rote Road · 2 mi E Rockford · Map | Winnebago County |
| 15 ft 3 in | Under Spring Creek Road · 2 mi N RT 20 Br · Map | Winnebago County |
| 15 ft 3 in | Under Riverside Road · 2 mi E Loves Park · Map | Winnebago County |
| 15 ft 3 in | Under Harlem Road · 2 mi S of Ill 173 · Map | Winnebago County |
| 15 ft 3 in | Under Swanson Road · 1.5 mi N Ill 173 · Map | Winnebago County |
| 15 ft 3 in | Under Elevator Road · 1 mi E of Roscoe · Map | Winnebago County |
| 15 ft 8 in | Under Rockton Road · 2.5 mi S of Ill 75 · Map | Winnebago County |