SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* HACK RANDALL (Last) (First) (Middle) 510 BERING DRIVE SUITE 600 (Street) HOUSTON TX 77057 (City) (State) (Zip)	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)
	3. Date of Earliest Transaction (Month/Day/Year) 05/10/2006
	4. If Amendment, Date of 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

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)

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 Securities Underlying Derivative Security (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: 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)

Explanation of Responses:

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.

	/s/ Randall A. Hack	05/12/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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