EXHIBIT 12
CROWN CASTLE INTERNATIONAL CORP.
COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES AND
EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS
(DOLLARS IN THOUSANDS)

| Years Ended December 31,
| 2011 |  | 2010 |  | 2009 |  | 2008 |  | 2007
Computation of earnings: |  |  |  |  |  |  |  |  |
Income (loss) before income taxes | $ | 179,807 |  |  | $ | (338,105 | ) |  | $ | (190,523 | ) |  | $ | (153,219 | ) |  | $ | (317,003 | )
Add: |  |  |  |  |  |  |  |  |
Fixed charges (as computed below) | 620,871 |  |  | 600,295 |  |  | 551,288 |  |  | 458,477 |  |  | 454,731 |
Subtract: |  |  |  |  |  |  |  |  |
Interest capitalized | (265 | ) |  | — |  |  | — |  |  | — |  |  | (1,406 | )
| $ | 800,413 |  |  | $ | 262,190 |  |  | $ | 360,765 |  |  | $ | 305,258 |  |  | $ | 136,322 |
Computation of fixed charges and combined fixed charges and preferred stock dividends and losses on purchases of preferred stock: |  |  |  |  |  |  |  |  |
Interest expense | $ | 404,968 |  |  | $ | 406,222 |  |  | $ | 386,447 |  |  | $ | 332,058 |  |  | $ | 329,610 |
Amortized premiums, discounts and capitalized interest expense related to indebtedness | 102,883 |  |  | 84,047 |  |  | 59,435 |  |  | 22,056 |  |  | 20,649 |
Interest capitalized | 265 |  |  | — |  |  | — |  |  | — |  |  | 1,406 |
Interest component of operating lease expense | 112,755 |  |  | 110,026 |  |  | 105,406 |  |  | 104,363 |  |  | 103,066 |
Fixed charges | 620,871 |  |  | 600,295 |  |  | 551,288 |  |  | 458,477 |  |  | 454,731 |
Dividends on preferred stock and losses on purchases of preferred stock | 22,940 |  |  | 20,806 |  |  | 20,806 |  |  | 20,806 |  |  | 20,805 |
Combined fixed charges and preferred stock dividends and losses on purchases of preferred stock | $ | 643,811 |  |  | $ | 621,101 |  |  | $ | 572,094 |  |  | $ | 479,283 |  |  | $ | 475,536 |
Ratio of earnings to fixed charges | 1.3 |  |  | — |  |  | — |  |  | — |  |  | — |
(Deficiency) excess of earnings to cover fixed charges | $ | 179,542 |  |  | $ | (338,105 | ) |  | $ | (190,523 | ) |  | $ | (153,219 | ) |  | $ | (318,409 | )
Ratio of earnings to combined fixed charges and preferred stock dividends and losses on purchases of preferred stock | 1.2 |  |  | — |  |  | — |  |  | — |  |  | — |
(Deficiency) excess of earnings to cover combined fixed charges and preferred stock dividends and losses on purchases of preferred stock | $ | 156,602 |  |  | $ | (358,911 | ) |  | $ | (211,329 | ) |  | $ | (174,025 | ) |  | $ | (339,214 | )