Is the Katy Freeway the widest in the world? According to this source and several others (like Sylvester Turner, the mayor of Houston), a section of I-10 in West Houston called the Katy Freeway is the widest highway on Earth. Its widest point is when it intersects Beltway 8 with a total of 26 lanes. However, some other sources dispute that claim. According to this article, there are many highways with more lanes than the Katy. For instance, there's a highway in Beijing with 50 lanes at a tolling point. I forgot where I read this, but another website says that Canada also has a freeway wider than I-10. Is the Katy Freeway the widest highway in the world or not?

By my count, there are 27 lanes at US route 95 here at the infamous Springfield, Virginia, Mixing Bowl. A few hundred feet further south, if Augusta Drive where it acts as a frontage road is included, there are 28 lanes.

For Katy Freeway at beltway 8 there are 24 lanes, but where it intersects Gessner Road there are 26.