Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
HACK RANDALL
   2. Issuer Name and Ticker or Trading Symbol
CROWN CASTLE INTERNATIONAL CORP [CCI] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
510 BERING DRIVE, SUITE 600		 3. Date of Earliest Transaction (Month/Day/Year)
05/10/2006
(Street)

HOUSTON, TX 77057		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock $0.01 Par Value 05/10/2006   M   25,000 (1) A $ 13 25,000 I See footnote (1)
Common Stock $0.01 Par Value 05/10/2006   M   5,000 (1) A $ 20.9375 30,000 I See footnote (1)
Common Stock $0.01 Par Value 05/10/2006   S   30,000 (1) D $ 34.549 0 I See footnote (1)
Common Stock $0.01 Par Value 05/11/2006   S   5,000 D $ 34.295 25,738 D  
Common Stock $0.01 Par Value 05/11/2006   S   25,000 D $ 34.317 114,925 I By The Hack LLC (2)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to purchase Common Stock) $ 13 05/10/2006   M     25,000 07/01/1998 07/01/2008 Common Stock 25,000 $ 0 0 I See footnote (1)
Stock Option (right to purchase Common Stock) $ 20.9375 05/10/2006   M     5,000 01/14/1999 01/14/2009 Common Stock 5,000 $ 0 0 I See footnote (1)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HACK RANDALL
510 BERING DRIVE
SUITE 600
HOUSTON, TX 77057		   X      

Signatures

 /s/ Randall A. Hack   05/12/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) These securities are held by or through Nassau Capital LLC. Mr. Hack disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and hte inclusion of such securities in this report shall not be deemed and admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.
(2) The Hack LLC (also refered to as Hack LLC) is a family investment vehicle of which Mr. Hack's spouse has sole voting and dispositive power. Mr. Hack disclaims beneficial ownership of any shares held by Hack LLC in which he does not have a pecuniary interest.

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