Note that a single stretch of road may belong to two different highways. For example, in the northeastern reaches of Lexington, Kentucky, I-64 and I-75 share pavement for about five miles. Likewise, Main Street is all three of US 421, US 25, and US 60 for a few blocks. Crossing the Kentucky River a bit south, near Richmond, I-75, US 25, and US 421 are a single stretch of road.