Exhibit 10.2

EXECUTION VERSION

JOINDER TO CASH MANAGEMENT AGREEMENT

Dated as of November 29, 2006

among

CROWN CASTLE TOWERS LLC AND

THE SUBSIDIARIES THEREOF LISTED ON THE SIGNATURE PAGES,

collectively, as Issuers,

CROWN CASTLE GT HOLDING SUB LLC

CROWN CASTLE ATLANTIC LLC

as Members of Crown Castle GT Company LLC

and Crown Atlantic Company LLC, respectively,

THE BANK OF NEW YORK

as successor to JPMorgan Chase Bank, N.A.

as Indenture Trustee

and

CROWN CASTLE USA INC.

as Manager

JOINDER TO CASH MANAGEMENT AGREEMENT

This JOINDER TO CASH MANAGEMENT AGREEMENT, dated as of November 29, 2006 (this "Agreement"), among CROWN CASTLE TOWERS LLC, a Delaware limited liability company (the "Issuer Entity"), CROWN CASTLE SOUTH LLC, a Delaware limited liability company, CROWN COMMUNICATION INC., a Delaware corporation, CROWN CASTLE PT INC., a Delaware corporation, CROWN COMMUNICATION NEW YORK, INC., a Delaware corporation, CROWN CASTLE INTERNATIONAL CORP. DE PUERTO RICO, a Puerto Rico corporation (collectively, together with the Issuer Entity, the "Initial Issuers"), CROWN CASTLE TOWERS 05 LLC, a Delaware limited liability company ("Crown 05"), CROWN CASTLE PR LLC, a Puerto Rico limited liability company ("Crown PR LLC"), CROWN CASTLE MU LLC, a Delaware limited liability company ("Crown MU"), CROWN CASTLE MUPA LLC, a Delaware limited liability company ("Crown MUPA" and, together with Crown 05, Crown PR LLC and Crown MU, the "Additional Issuers", and, together with the Initial Issuers, the "Issuers"), CROWN CASTLE GT HOLDING SUB LLC, a Delaware limited liability company, CROWN CASTLE ATLANTIC LLC, a Delaware limited liability company (together with Crown Castle GT Holding Sub LLC, the "Members"), THE BANK OF NEW YORK (as successor to JPMorgan Chase Bank, N.A.), a New York banking corporation, as indenture trustee and not in its individual capacity (the "Indenture Trustee"), and CROWN CASTLE USA INC., a Pennsylvania corporation (the "Manager").

W   I   T   N   E   S   S   E   T   H :

WHEREAS, the Initial Issuers, the Members, the Indenture Trustee and the Manager are parties to that certain Cash Management Agreement dated as of June 8, 2005 (the "Cash Management Agreement");

WHEREAS, the Initial Issuers and the Indenture Trustee are parties to that certain Indenture dated as of June 1, 2005, as amended, supplemented and modified prior to the date hereof (the "Indenture");

WHEREAS, the Initial Issuers, the A