Train service to the airport will be less frequent and also louder for about a month

Repairs will cut RTD A Line service to every 30 minutes for most of October.
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An RTD A Line train crosses Green Valley Ranch Boulevard on its way to Denver International Airport June 12, 2019. (Hart Van Denberg/Denverite)

Repairs will knock the frequency of RTD's A Line, which runs from downtown to Denver International Airport, down to 30 minutes for most of October.

The train typically operates every 15 minutes at peak times. But soil under the crossing at Dahlia Street has settled, making repairs necessary, an RTD spokesperson wrote in an email. That means the train will only run every 30 minutes starting Monday, Oct. 3 through Oct. 29. 

Crews will be working 20 hours a day, six days a week on the repairs, according to an RTD press release. Trains will also blast their horns through the crossing during work hours as a safety precaution.

The A Line is RTD's most used, with more than a half-million passengers in July 2022. That's up about 30 percent from the same period last year.

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