<ARTICLE> 5
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS  AS OF JUNE  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> U.S. DOLLARS

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<EXCHANGE-RATE>                                      1
<CASH>                                           1,951
<SECURITIES>                                         0
<RECEIVABLES>                                  150,284
<ALLOWANCES>                                         0
<INVENTORY>                                      5,365
<CURRENT-ASSETS>                               185,881
<PP&E>                                         655,556
<DEPRECIATION>                                 148,945
<TOTAL-ASSETS>                                 701,954
<CURRENT-LIABILITIES>                           77,796
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            66
<OTHER-SE>                                     359,233
<TOTAL-LIABILITY-AND-EQUITY>                   701,954
<SALES>                                        497,475
<TOTAL-REVENUES>                                     0
<CGS>                                                0
<TOTAL-COSTS>                                  444,903
<OTHER-EXPENSES>                                 (323)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               4,188
<INCOME-PRETAX>                                 48,707
<INCOME-TAX>                                    19,100
<INCOME-CONTINUING>                             29,607
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    29,607
<EPS-BASIC>                                        .46
<EPS-DILUTED>                                      .45