[ARTICLE] 6
[CIK] 0000880366
[NAME] SMITH BARNEY INVESTMENT TRUST
[SERIES]
   [NUMBER] 3
   [NAME] INTERMEDIATE MATURITY CALIFORNIA MUNICIPALS FUND. CLASS L
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          NOV-30-1998
[PERIOD-END]                               NOV-30-1998
[INVESTMENTS-AT-COST]                       31,187,330
[INVESTMENTS-AT-VALUE]                      33,463,294
[RECEIVABLES]                                  514,714
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                              33,978,008
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      103,312
[TOTAL-LIABILITIES]                            103,312
[SENIOR-EQUITY]                                     01
[PAID-IN-CAPITAL-COMMON]                    32,517,861
[SHARES-COMMON-STOCK]                          595,249
[SHARES-COMMON-PRIOR]                          395,511
[ACCUMULATED-NII-CURRENT]                        2,885
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                      (925,844)
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                     2,275,964
[NET-ASSETS]                                33,874,696
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                            1,622,065
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                 244,317
[NET-INVESTMENT-INCOME]                      1,377,748
[REALIZED-GAINS-CURRENT]                        40,605
[APPREC-INCREASE-CURRENT]                      626,274
[NET-CHANGE-FROM-OPS]                        2,044,627
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                      186,713
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                        288,835
[NUMBER-OF-SHARES-REDEEMED]                    104,394
[SHARES-REINVESTED]                             15,296
[NET-CHANGE-IN-ASSETS]                       4,533,576
[ACCUMULATED-NII-PRIOR]                        (5,183)
[ACCUMULATED-GAINS-PRIOR]                    (966,449)
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                          156,995
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                321,713
[AVERAGE-NET-ASSETS]                         4,432,553
[PER-SHARE-NAV-BEGIN]                             8.65
[PER-SHARE-NII]                                   0.37
[PER-SHARE-GAIN-APPREC]                           0.19
[PER-SHARE-DIVIDEND]                              0.37
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                               8.84
[EXPENSE-RATIO]                                   0.96
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>