hwy marker
Exit 8:
Mile 8.9
Approximate GPS: 41.656092, -88.017903
Exit 20A:
Mile 20.1
Approximate GPS: 41.809635, -88.050299
Exit 27:
Mile 27.9
Approximate GPS: 41.903913, -88.037902
Exit 29:
Mile 29.8
Approximate GPS: 41.932013, -88.037572
