Crown Castle Announces First Quarter 2015 Earnings Release and Conference Call Schedule

Crown Castle International Corp. (NYSE:CCI) ("Crown Castle") announced today that it plans to release its first quarter 2015 results on Wednesday, April 22, 2015, after the market closes. In conjunction with the release, Crown Castle has scheduled a conference call for Thursday, April 23, 2015, at 10:30 a.m. eastern time. The conference call may be accessed by dialing 888-204-4517 and asking for the Crown Castle call (access code 8875858) at least 30 minutes prior to the start time. The conference call may also be accessed live over the Internet at http://investors.crowncastle.com. Any supplemental materials for the call will be posted on the Crown Castle website at http://investor.crowncastle.com.

A telephonic replay of the conference call will be available from 1:30 p.m. eastern time on Thursday, April 23, 2015, through 1:30 p.m. eastern time on Wednesday, July 22, 2015, and may be accessed by dialing 888-203-1112 and using access code 8875858. An audio archive will also be available on the company's website at http://investor.crowncastle.com shortly after the call and will be accessible for approximately 90 days.

ABOUT CROWN CASTLE

Crown Castle provides wireless carriers with the infrastructure they need to keep people connected and businesses running. With approximately 40,000 towers and 14,000 small cell nodes supported by approximately 7,000 miles of fiber, Crown Castle is the nation's largest provider of shared wireless infrastructure with a significant presence in the top 100 US markets. In addition, Crown Castle operates approximately 1,800 towers in Australia. For more information on Crown Castle, please visit www.crowncastle.com.

Contacts: Jay Brown, CFO

Son Nguyen, VP- Corporate Finance

Crown Castle International Corp.

713-570-3050