About The Line-Urban Flats on the Monon The Line-Urban Flats on the Monon opened in 2020, and since then has become synonymous with premier apartment living here in Indianapolis. From roomy floor plans ranging from studio apartments to 2 bedroom apartments, to a large assortment of community amenities, we’re building one of the premier living communities in Indianapolis, and we want you to join us. The Line is situated just by E 64th St and Westfield Blvd and is mere minutes from the Monon Trail and Broad Ripple. With easy access to N Keystone Ave, you’re able to get the best of both worlds with your new apartment at The Line–a convenient location with comfortable surroundings. The Line is Does The Line look like somewhere you could see yourself living? Schedule a tour and learn more about what your new home can offer you.