                                                                  EXHIBIT (99.1)



                            JOINT FILING AGREEMENT



     In  accordance  with Rule  13d-1(k)(1)  promulgated  under  the  Securities
Exchange Act of 1934, the  undersigned  agree to the joint filing of a Statement
on Schedule 13G (including  any and all amendments  thereto) with respect to the
Common  Units  representing  limited  partnership  interests,  no par value,  of
Williams  Energy Partners L.P. and further agree to the filing of this agreement
as an Exhibit  thereto.  In  addition,  each party to this  Agreement  expressly
authorizes  each other party to this Agreement to file on its behalf any and all
amendments to such Statement on Schedule 13G.


Date:  April 10, 2002


                                  THE GOLDMAN SACHS GROUP, INC.


                                  By: /s/ Roger S. Begelman
                                  ----------------------------------------
                                  Name:   Roger S. Begelman
                                  Title:  Attorney-in-fact




                                  GOLDMAN, SACHS & CO.


                                  By: /s/ Roger S. Begelman
                                  ----------------------------------------
                                  Name:   Roger S. Begelman
                                  Title:  Attorney-in-fact




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