<ARTICLE> 5
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS  AS OF SEPTEMBER 30, 1999 AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH STATEMENTS
</LEGEND>
<CIK> 863557
<NAME> SWIFT TRANSPORTATION CO., INC.
<MULTIPLIER> 1,000
<CURRENCY> US DOLLARS

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<EXCHANGE-RATE>                                      1
<CASH>                                           2,481
<SECURITIES>                                         0
<RECEIVABLES>                                  144,867
<ALLOWANCES>                                         0
<INVENTORY>                                      6,644
<CURRENT-ASSETS>                               180,518
<PP&E>                                         702,315
<DEPRECIATION>                                 160,358
<TOTAL-ASSETS>                                 731,853
<CURRENT-LIABILITIES>                          108,659
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            66
<OTHER-SE>                                     378,214
<TOTAL-LIABILITY-AND-EQUITY>                   731,853
<SALES>                                        776,898
<TOTAL-REVENUES>                               776,898
<CGS>                                                0
<TOTAL-COSTS>                                  691,176
<OTHER-EXPENSES>                                 (547)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               7,020
<INCOME-PRETAX>                                 79,249
<INCOME-TAX>                                    30,910
<INCOME-CONTINUING>                             48,339
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    48,339
<EPS-BASIC>                                        .76
<EPS-DILUTED>                                      .74