4 ms·

It is. The next two longest also start around there: US6 in Boston and I90 which starts at the tip of Cape Cod.

• quesera 4y ago
  I-90 ends in East Boston.
• Kon-Peki 4y ago
  Some highways are measured in the thousands of miles. Others are measured in feet: https://en.wikipedia.org/wiki/Indiana_State_Road_520 https://en.wikipedia.org/wiki/Indiana_State_Road_520