IL: I-90 Chicago Skyway Exit Numbers

[Markkos1992]

1. The actual StaSt should be 100.
2.  StaSt>-101
3.  3rdSt>-102
4.  StoIslAve>-103
5.  SJefBlvd>-JefBlvd (no exit number here)
6.  87thSt>-104
7.  92ndSt>-105
8.  IndAve>-107 (should also be relocated to the center of the ramps IMO)

[Highway63]

GMSV shows that exit numbers date back to 2015, so I'm not sure how I missed them. Maybe I was still under the impression they never got marked.

[Markkos1992]

Included in (https://github.com/TravelMapping/HighwayData/pull/4846).