After two years and nearly $6 million, Centennial has a backbone.

A 50-mile-long fiber-optic backbone that could eventually provide the more than 100,000 residents of this south metro community lickety-split Internet that will make moving data-intensive files or receiving smooth-streaming video a breeze.

Centennial recently finished construction, started in 2016, of a 432-strand fiber network that winds through every neighborhood in this city, setting up the capability for residents and businesses to get 1 gigabit per second up and down speeds at their homes and offices.

The three-loop network, dubbed FiberWorks, is already proving a boost to Isaac Herman, who owns a video game production company and works out of his Centennial home in the Willow Creek neighborhood. Herman was one of the early adopters of the new broadband service, which for now is available on a limited basis in the city.

“We do a lot of file transfers,” said Herman, whose gigabit service went live in September and replaced service he had been getting from Comcast. “The video calls (with employees and clients) are a lot better than before.”