
The New York State Thruway Berkshire Spur connects the Thruway mainline to the Massachusetts Turnpike. The spur is mostly part of I-90, but the westernmost miles do not have a signed route number. This portion includes the Castleton-on-Hudson Bridge.
Mile | Eastbound | Westbound | Notes |
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Albany County | |||
Speed Limit 65 | |||
B0.0 | ![]() |
Exits 21B-1![]() New York City |
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B0.0 | Exits 22-61![]() ![]() Albany Buffalo |
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Rensselaer County | Albany County | ||
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B6.6 | Exit B1![]() ![]() Albany Hudson |
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Columbia County | Rensselaer County | ||
B15.1 | Exit B2![]() ![]() Taconic State Parkway Passenger cars only |
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Virtual Ticket System Toll | |||
B23.3 | Exit B3![]() Austerlitz New Lebanon |
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Speed Limit 65 | |||
B24.3 | Massachusetts Berkshire County |
New York Columbia County |