Interstate 610 (abbreviated
I-610) is a
freeway that forms a loop around the downtown sector of city of
Houston, Texas. Interstate 610, colloquially known as
The Loop,
Loop 610,
The 610 Loop, or just
610, traditionally marks the border between the inner city of Houston ("inside the Loop") and its surrounding areas. It is the inner of the three Houston
beltways, the other two being
Beltway 8 (Sam Houston Tollway) and
State Highway 99 (Grand Parkway), which is currently under construction and not complete. It is one of four interstate loops not to share its route with another interstate freeway, the others being
I-270,
I-295, and
I-485.