-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0000773757-07-000129.txt : 20070504
<SEC-HEADER>0000773757-07-000129.hdr.sgml : 20070504
<ACCEPTANCE-DATETIME>20070504130501
ACCESSION NUMBER:		0000773757-07-000129
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20070504
DATE AS OF CHANGE:		20070504
EFFECTIVENESS DATE:		20070504

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COLUMBIA FUNDS SERIES TRUST I
		CENTRAL INDEX KEY:			0000773757
		IRS NUMBER:				363376651
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-99356
		FILM NUMBER:		07819211

	BUSINESS ADDRESS:	
		STREET 1:		ONE FINANCIAL CENTER
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02111
		BUSINESS PHONE:		8003382550

	MAIL ADDRESS:	
		STREET 1:		ONE FINANCIAL CENTER
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02111

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLUMBIA FUNDS TRUST IX
		DATE OF NAME CHANGE:	20031107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LIBERTY STEIN ROE FUNDS MUNICIPAL TRUST
		DATE OF NAME CHANGE:	19991025

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STEINROE MUNICIPAL TRUST
		DATE OF NAME CHANGE:	19920703
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000773757
<SERIES-ID>S000012098
<SERIES-NAME>Columbia U.S. Treasury Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032988
<CLASS-CONTRACT-NAME>Class A
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032989
<CLASS-CONTRACT-NAME>Class B
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032990
<CLASS-CONTRACT-NAME>Class C
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032991
<CLASS-CONTRACT-NAME>Class Z
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497
<SEQUENCE>1
<FILENAME>custifprosupp.txt
<DESCRIPTION>CUSTIF PM CHANGE SUPPLEMENTS
<TEXT>

                         COLUMBIA U.S. TREASURY INDEX FUND
                                  (the "Fund")

                     SERIES OF COLUMBIA FUNDS SERIES TRUST I

               Supplement to the Prospectuses dated August 1, 2006


     The section captioned "Portfolio Manager" is removed and replaced in its
entirety by the following disclosure:


PORTFOLIO MANAGERS
- -------------------------------------------------------------------------------

David Lindsay, a director of Columbia Advisors, is a co-manager for the Fund and
has managed or co-managed the Fund since July, 1994. Mr. Lindsay has been
associated with Columbia Advisors or its predecessors since 1986.

Brian Drainville, a director of Columbia Advisors, is a co-manager for the Fund
and has co-managed the Fund since May, 2007. Mr. Drainville has been associated
with Columbia Advisors or its predecessors since 1996.

Effective August 1, 2007, Mr. Lindsay will no longer co-manage the Fund. Mr.
Drainville will become the sole manager for the Fund at that time.

The Statement of Additional Information provides additional information about
the managers' compensation, other accounts managed and ownership of securities
in the Fund.


INT-47/130884-0507                                                  May 4, 2007


<PAGE>

                    COLUMBIA U.S. TREASURY INDEX FUND
                                (the "Fund")

                  SERIES OF COLUMBIA FUNDS SERIES TRUST I

     Supplement to the Statement of Additional Information dated August 1, 2006

     The following information as it pertains to the Fund is revised by adding
information relating to Mr. Brian Drainville as co-manager of the Fund:

o           The following is added to the table under the heading "Other
            Accounts Managed by the Portfolio Manager":

<TABLE>
<CAPTION>
<S>                     <C>                              <C>                           <C>

- ----------------------- -------------------------------- ------------------------------ ------------------------------

  Portfolio Manager          Other SEC-registered           Other pooled investment            Other accounts
                         open-end and closed-end funds             vehicles

- ----------------------- -------------------------------- ------------------------------ ------------------------------
- ----------------------- --------------- ---------------- ----------------- ------------ ------------ -----------------
                                                              Number
                            Number
                              of                                of                       Number of
                           accounts         Assets           accounts        Assets      accounts         Assets
- ----------------------- --------------- ---------------- ----------------- ------------ ------------ -----------------
- ----------------------- --------------- ---------------- ----------------- ------------ ------------ -----------------
Brian Drainville              1          $1.7 billion           12         $3 billion       73          $4 billion
- ----------------------- --------------- ---------------- ----------------- ------------ ------------ -----------------

Account information is provided as of January 31, 2007.

</TABLE>


o The following is added to the table under the heading "Ownership of
Securities":

<TABLE>
<CAPTION>
<S>                                                     <C>

- ------------------------------------------------------ -----------------------------------------------------
                                                                Dollar Range of Equity Securities
                  Portfolio Manager                               in the Fund Beneficially Owned

- ------------------------------------------------------ -----------------------------------------------------
- ------------------------------------------------------ -----------------------------------------------------
Brian Drainville                                                               None
- ------------------------------------------------------ -----------------------------------------------------

Account information is provided as of January 31, 2007.

</TABLE>

o The following is added to the table under the heading "Compensation":


<TABLE>
<CAPTION>
<S>                              <C>                                         <C>
- -------------------------------- ------------------------------------------- -----------------------------------------
       Portfolio Manager                   Performance Benchmark                            Peer Group
- -------------------------------- ------------------------------------------- -----------------------------------------
- -------------------------------- ------------------------------------------- -----------------------------------------
Brian Drainville                     Citigroup Bond U.S. Treasury Index        Lipper General U.S. Treasury Category

- -------------------------------- ------------------------------------------- -----------------------------------------

</TABLE>


INT-50/130883-0507                                                  May 4, 2007

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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