Skip to Content
Streetsblog USA home
Streetsblog USA home
Log In
Bicycle Safety

Seattle May Try to Replicate Barcelona’s ‘Superblocks’

The intersection of a Superille, with excess street space repurposed for play. Photo: BCN Ecologia

A Seattle council member is proposing that a six-block area of the city's Capitol Hill neighborhood be transformed into a Barcelona-style "Superille" or "Superblock."

These clusters of blocks — in which car traffic is mostly curtailed — have become hugely popular in the Spanish city, transforming residential districts by creating walkable, child-friendly neighborhoods with welcoming public spaces.

Council Member Teresa Mosqueda thinks that superblocks would work well in her district, so she is urging that Seattle pilot the model in a six-block area of Capitol Hill between between Pine and Union between 12th and Broadway. Vehicle traffic would be routed around the area, sparing residents living on the interior blocks the noise, pollution and danger of interaction with traffic.

Mosqueda said she would take up the idea after the election in November, when she hopes it will receive the support it needs in the council, Margo Vansynghel at Capitol Hill Blog reported.

superblock-2-468x251

Of course, Seattle, a national leader on street design, is already experimenting with a similar idea. The city calls its experiment "home zones." It is offering $350,000 in grants for neighborhoods that want to try traffic calming within "a grid of arterial streets."

By all accounts, the Superilles experiment in Barcelona has been a huge success, as David Roberts at Vox has detailed. On some of the city's earliest Superblocks, bike trips rose by 30 percent and walking jumped 10 percent. The blocks make urban life quieter and more peaceful and sociable by creating a space for gathering and play, as the photo above shows.

Barcelona eventually hopes to expand them to cover the entire city.

Stay in touch

Sign up for our free newsletter

More from Streetsblog USA

Talking Headways Podcast: A Week Without Driving

Anna Zivarts discusses the lessons of her national campaign and yearly event with several politicians who brought it to their communities.

January 22, 2026

Aisle Be Damned: Dems and GOP Unite in Oregon In Bid To Legalize Kei Trucks

Tiny trucks bring people together across the political spectrum — and they could help save lives and budgets.

January 22, 2026

Thursday’s Headlines Are Getting Their Butts Kicked by China

China alone accounted for 72 percent of the new metro and light rail lines that opened last year, more than doubling the rest of the world combined.

January 22, 2026

Survey: Most Americans Are Open To Ditching Their Cars

Automakers have spent a century and countless trillions of dollars making car-dependent living the American norm. But U.S. resident still aren't sold, a new survey suggests.

January 21, 2026

You Can’t Afford Wednesday’s Headlines

Americans want to live in walkable areas near transit, but not enough housing is being built there, driving prices out of reach for many and forcing them into a car-dependent lifestyle.

January 21, 2026

NYC Warns Delivery Apps to Follow New Worker Protection Laws

The Mamdani Administration sent letters to over 60 delivery app companies, warning they must comply with new regulations.

January 20, 2026
See all posts