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 *
SPO ADVISORY CORP
  2. Issuer Name and Ticker or Trading Symbol
CROWN CASTLE INTERNATIONAL CORP [CCI]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
591 REDWOOD HIGHWAY, SUITE 3215
3. Date of Earliest Transaction (Month/Day/Year)
03/06/2007
(Street)

MILL VALLEY, CA 94941
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 03/06/2007   P   900 A $ 31.05 33,900,583 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   100 A $ 31.33 33,900,683 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   200 A $ 31.34 33,900,883 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   8,755 A $ 31.35 33,909,638 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   44,400 A $ 31.36 33,954,038 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   500 A $ 31.37 33,954,538 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   600 A $ 31.39 33,955,138 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   2,447 A $ 31.4 33,957,585 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   100 A $ 31.41 33,957,685 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   600 A $ 31.42 33,958,285 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   600 A $ 31.44 33,958,885 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   1,500 A $ 31.45 33,960,385 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   1,300 A $ 31.46 33,961,685 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   3,098 A $ 31.47 33,964,783 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   4,400 A $ 31.48 33,969,183 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   4,500 A $ 31.49 33,973,683 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   3,000 A $ 31.5 33,976,683 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   4,900 A $ 31.51 33,981,583 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   11,800 A $ 31.52 33,993,383 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   6,100 A $ 31.53 33,999,483 (1) (2) (3) (4) (5) (6) I See footnotes 1-6
Common stock 03/06/2007   P   200 A $ 31.55 33,999,683 (1) (2) (3) (4) (5) (6) I See footnotes 1-6

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SPO ADVISORY CORP
591 REDWOOD HIGHWAY, SUITE 3215
MILL VALLEY, CA 94941
    X    
WILLIAM & SUSAN OBERNDORF TRUST
591 REDWOOD HIGHWAY, SUITE 3215
MILL VALLEY, CA 94941
    X    
OBERNDORF WILLIAM E
591 REDWOOD HIGHWAY, SUITE 3215
MILL VALLEY, CA 94941
    X    

Signatures

 Kim M. Silva , Attorney in fact   03/08/2007
**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) The entity acquiring these shares is the William E. & Susan C. Oberndorf Trust ("WEO Trust"). William E. Oberndorf ("WEO") may be deemed to indirectly beneficially own 450,000 shares of the issuer's common stock solely in his capacity as a trustee for WEO Trust for the benefit of himself and his wife. Additionally, WEO beneficially owns 1,025,000 shares of the issuer's common stock held in the WEO individual retirement account, which is self-directed, and may be deemed to indirectly beneficially own (i) 350,000 shares of the issuer's common stock solely in his capacity as sole general partner of Oberndorf Family Partners, (ii) 50,000 shares of the issuer's common stock solely in his capacity as father of children who share his household, and (iii) 400,000 shares of the issuer's common stock solely in his capacity as one of the directors of the Oberndorf Foundation.
(2) Additionally, 26,827,663 shares of the issuer's common stock are owned directly by SPO Partners II, L.P.("SPO Partners") and may be deemed to be indirectly beneficially owned by (i) SPO Advisory Partners, L.P. ("SPO Advisory"), the sole general partner of SPO Partners, (ii) SPO Advisory Corp. ("SPO Corp."), the sole general partner of SPO Advisory, and (iii) John H. Scully ("JHS"), WEO and William J. Patterson, ("WJP"), the three controlling persons of SPO Corp. Additionally, 1,947,300 shares of the issuer's common stock are owned directly by San Francisco Partners II, L.P. ("SF Partners"), and may be deemed to be indirectly beneficially owned by (i) SF Advisory Partners, L.P. ("SF Advisory"), the sole general partner of SF Partners, (ii) SPO Corp., the sole general partner of SF Advisory, and (iii) JHS, WEO and WJP, the three controlling persons of SPO Corp.
(3) Additionally, 230,800 shares of the issuer's common stock may be deemed to be indirectly beneficially owned by JHS solely in his capacity as the trustee for the John H. Scully Living Trust dated October 1, 2003 ("JHS Trust"), a general partner of Netcong Newton Partners, L.P. ("Netcong"). 1,195,800 shares are owned directly by the Phoebe Snow Foundation, ("PSF"), and may be deemed to be indirectly beneficially owned by JHS, the controlling person, sole director and executive officer of PSF. 317,800 shares are held in the("JHS") Individual Retirement Account (Rollover), which is self-directed. Additionally, JHS may be deemed to indirectly beneficially own (i) 339,800 shares solely in his capacity as the trustee for the JHS Trust, the general partner of Cranberry Lake Partners, L.P. ("CLP"). Additionally, 662,400 shares are owned directly by the JHS Trust and may be deemed to be indirectly beneficially owned by JHS, solely in his capacity as sole trustee for the JHS Trust.
(4) Additionally, 30,000 shares of the issuer's common stock are owned directly by the Elizabeth R. & William J. Patterson Foundation ("WJPFND"), and may be deemed to be indirectly beneficially owned by WJP solely in his capacity as one of the directors of WJPFND. Additionally 15,000 shares of the issuer's common stock are owned directly by WJP.
(5) Additionally, Kurt C. Mobley ("KCM") directly owns 50,000 shares of the issuer's common stock and holds 30,000 shares of the issuer's common stock in the KCM individual retirement account, which is self directed, and may be deemed to indirectly beneficially own and holds 20,000 shares of the issuer's common stock in his capacity as the sole general partner of Cannonball Creek L.P., a family partnership. Additionally, Edward H. McDermott ("EHM") directly owns 10,000 shares of the issuer's common stock and holds 1,400 shares of the issuer's common stock in the EHM SEP individual retirement account and 1,100 shares of the issuer's common stock in the EHM Rollover individual retirement account, both of which are self-directed.
(6) Additionally, 960 shares of the issuer's common stock are owned directly by Eli J. Weinberg ("EJW"); 460 shares of the issuer's common stock are owned directly by Lavanya Ashok ("LA"); and 300 shares of the issuer's common stock are owned directly by George Markov ("GM"). Additionally, 18,000 shares of the issuer's common stock are owned directly by Betty Jane Weimer; 14,900 shares of the issuer's common stock are owned directly by Brian Scully; and 11,000 shares of the issuer's common stock are owned directly by Vincent Scully.
 
Remarks:
Form 1 of 1.



The persons listed in Notes (1),(2),(3),(4),(5) and (6) above ( each a "Reporting Person") may be deemed to form a "group", as such term is defined in Rule 13d-5(b)(1) promulgated under the Securities Exchange Act of 1934, for purposes of this filing.  This filing shall not be deemed as an admission by any Reporting Person that such person is, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the beneficial owner of any equity securities covered by this statement.  Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such person's pecuniary interest, if any, therein.

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