EXHIBIT 11

CROWN CASTLE INTERNATIONAL CORP.

COMPUTATION OF NET LOSS

PER COMMON SHARE

(IN THOUSANDS OF DOLLARS, EXCEPT PER SHARE AMOUNTS)

	YEARS ENDED DECEMBER 31,
	1999			2000			2001			2002			2003
Loss before cumulative effect of changes in accounting principles	$	(94,347	)	$	(204,786	)	$	(366,167	)	$	(272,521	)	$	(396,330	)
Dividends on preferred stock		(28,881	)		(59,469	)		(79,028	)		(79,786	)		(54,294	)
Gains (losses) on purchases of preferred stock		—			—			—			99,424			349
Loss before cumulative effect of changes in accounting principles applicable to common stock for basic and diluted computations		(123,228	)		(264,255	)		(445,195	)		(252,883	)		(450,275	)
Cumulative effect of changes in accounting principles		(2,414	)		—			—			—			(2,035	)
Net loss applicable to common stock for basic and diluted computations	$	(125,642	)	$	(264,255	)	$	(445,195	)	$	(252,883	)	$	(452,310	)
Weighted-average number of common shares outstanding during the period for basic and diluted computations (in thousands)		131,466			178,588			214,246			218,028			216,947
Per common share—basic and diluted:
Loss before cumulative effect of change in accounting principle	$	(0.94	)	$	(1.48	)	$	(2.08	)	$	(1.16	)	$	(2.08	)
Cumulative effect of change in accounting principle		(0.02	)		—			—			—			(0.01	)
Net loss	$	(0.96	)	$	(1.48	)	$	(2.08	)	$	(1.16	)	$	(2.09	)