Commuters on social media seemed overwhelmingly pleased with Seattle's new light-rail service to Capitol Hill and the University of Washington.

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On Monday morning, commuters got their first chance to take a workday ride in Seattle’s new, $1.8 billion tunnel connecting the University of Washington and Capitol Hill with the Westlake station downtown.

The two new stations, along with a third set to open in SeaTac this fall, are expected to add 45,000 weekday passengers to the Link system by 2021.

Trains depart UW station starting at 4:45 a.m. They run every six minutes during peak hours, every 10 minutes at midday and every 15 minutes after 10 p.m. The last train arrives at UW station at 12:50 a.m.

Next week, a handful of bus routes will shift to connect riders to the new light-rail stations.

Officials held a launch party on Saturday, complete with confetti, giant ribbon-cutting scissors and live music. Sound Transit counted about 30,000 boardings from 10 a.m. to 5 p.m. that day.

Haven’t been inside the new stations yet? Take a peek:

Monday-morning reviews of the extension:

The new light rail connections were well-received on social media Monday morning as commuters gave them a first workday spin.

Did you commute on the new light-rail extensions this morning? Leave a comment to tell us how it went.