Major Intersections
The entire route is in Westchester County.
| Location | Mile | km | Destinations | Notes |
|---|---|---|---|---|
| Yonkers | 0.00 | 0.00 | Cross County Parkway to Bronx River Parkway | Exit 4 (Cross County Parkway) |
| I-87 / Thruway | Exit 5 (I-87 / Thruway) | |||
| 1.11 | 1.79 | Sprain Brook Parkway | No access from NY 100 north to Sprain Brook Parkway south | |
| Greenburgh | 6.89 | 11.09 | NY 100A (West Hartsdale Avenue) | Hamlet of Hartsdale; southern terminus of NY 100A |
| White Plains | 8.61 | 13.86 | NY 119 east (Tarrytown Road) | Eastern terminus of NY 100 / NY 119 overlap |
| Greenburgh | I-287 (Cross-Westchester Expressway) | Exit 5 (I-287) | ||
| 9.10 | 14.65 | NY 119 west (Tarrytown Road) | Western terminus of NY 100 / NY 119 overlap | |
| Greenburgh–Mount Pleasant town line |
12.26 | 19.73 | NY 100A (Knollwood Road) / NY 100C (Grasslands Road) | Northern terminus of NY 100A; eastern terminus of NY 100C |
| Mount Pleasant | 13.67 | 22.00 | Sprain Brook Parkway to Taconic Parkway / Saw Mill River Parkway | |
| 14.85 | 23.90 | NY 141 | Hamlet of Hawthorne | |
| 15.02 | 24.17 | NY 9A south (Saw Mill River Road) | Southern terminus of NY 9A / NY 100 overlap | |
| 16.15 | 25.99 | NY 117 | Interchange | |
| Taconic Parkway south | Southbound exit and northbound entrance | |||
| 18.13 | 29.18 | NY 9A north | Northern terminus of NY 9A / NY 100 overlap | |
| New Castle | 20.71 | 33.33 | NY 133 west | Southern terminus of NY 100 / NY 133 overlap |
| 20.85 | 33.55 | Taconic Parkway | Hamlet of Millwood | |
| 21.10 | 33.96 | NY 133 east | Northern terminus of NY 100 / NY 133 overlap | |
| 21.56 | 34.70 | NY 120 | Western terminus of NY 120 | |
| Yorktown | 23.23 | 37.39 | NY 134 | Hamlet of Kitchawan |
| 24.94 | 40.14 | NY 118 | Southern terminus of NY 118 | |
| Somers | 29.30 | 47.15 | NY 35 | Hamlet of Whitehall Corners |
| 29.88 | 48.09 | NY 139 | Southern terminus of NY 139 | |
| 32.35 | 52.06 | NY 138 | Western terminus of NY 138 | |
| 33.27 | 53.54 | US 202 | Hamlet of Somers |
Read more about this topic: New York State Route 100
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