Roads of the Mid-South & West
>
Highways of the State of Illinois
>
County Highways of the State of Illinois
>
County Highways of St. Clair County
> St. Clair County Highway P66
St. Clair County Highway P66
St. Clair County Highway P66 is a north-south highway on the southwest side of Belleville.
NB SCCH P66 north of SCCH J10.
NB SCCH P66 south of IL St Rt 15.
