Comcast Corp. said Thursday it was expanding the capacity of high-speed fiber lines in several business-dense areas in the Twin Cities, including Nicollet Mall in downtown Minneapolis.

When complete, the network in these areas will offer customers Internet speeds of up to 10 gigabits per second.

By contrast, Twin Cities residential customers typically get Internet service of around 25 to 40 megabits per second. A gigabit is 1 billion bits and a megabit is 1 million bits.

In addition to the Nicollet Mall area, where the company is able to take advantage of street construction to lay down new fiber, Comcast said it is adding broadband capacity in Plymouth at County Roads 6 & 9, Bass Lake Road, Nathan Lane and Cheshire Lane; in Chaska along Lake Hazeltine Drive; in Eagan along Mike Collins Drive and Yankee Doodle Road in Eagan; in Osseo in the Linden Drive-Justen Circle project; and in Lake Elmo along Eagle Point Blvd.

Evan Ramstad