New Hampshire Route 153 is a 50.566 mi secondary north–south highway in Strafford and Carroll counties in eastern New Hampshire. The southern terminus is in Farmington at New Hampshire Route 11. The northern terminus is in Conway village (town of Conway) at New Hampshire Route 16 and New Hampshire Route 113.
New Hampshire has 153 secondary north-south highways.
Nothing in the text indicates how many total secondary north-south highways they have. It's difficult because the text contains many of the same words as the statement, but perhaps the word "secondary" was confusing, and also many other numbers are present in the text.