Exhibit 5

                         BARTON, KLUGMAN & OETTING LLP
                      333 South Grand Avenue - Suite 3700
                      Los Angeles, California 90071-1599
                           Telephone (213) 621-4000
                           Telecopier (213) 625-1832


                                 June 9, 2000



Jacobs Engineering Group Inc.
1111 South Arroyo Parkway
Pasadena, CA 91105

Ladies and Gentlemen:

          This firm is counsel to Jacobs Engineering Group Inc. (the "Company")
and has advised the Company in connection with the adoption of the Jacobs
Engineering Group Inc. 1999 Outside Director Stock Plan (the "1999 Director
Plan") as described in the Company's Registration Statement on Form S-8 under
the Securities Act of 1933 and covering 200,000 shares of its common stock
reserved for the 1999 Director Plan (the "Registration Statement").

          We have examined the Registration Statement and originals or copies,
certified or otherwise and identified to our satisfaction, of such corporate
records, documents, certificates and statements of officers and accountants of
the Company and of public officials and such other documents as we have
considered necessary for the purpose of rendering this opinion.

          Based on the foregoing and such other matters of fact and law as we
deem relevant for the purpose of rendering the opinion expressed herein, we are
of the opinion that:

               1.   The shares of the Company's common stock reserved for
     issuance under the 1999 Director Plan have been duly authorized for
     issuance and when issued in the manner contemplated by the Registration
     Statement will be duly issued, fully paid and non-assessable, with no
     personal liability attached to the ownership thereof under the laws of the
     State of Delaware, the state of incorporation of the Company or of the
     State of California, the state in which the Company's principal place of
     business is located;

               2.   The 1999 Director Plan is not subject to the requirements of
     the Employee Retirement Income Security Act of 1974, is not required to be
     qualified under Section 401 of Internal Revenue Code, and has not been so
     qualified.

          We hereby consent to the filing of this opinion as an Exhibit to the
Registration Statement and to the use of our name under the heading "LEGAL
OPINIONS" in the prospectus forming a part of the Registration Statement. In
giving such consent, we do not thereby admit that we come within the category of
persons whose consent, is required under Section 7 of the Securities Act of 1933
or the Rules and Regulations of the Securities and Exchange Commission
thereunder.

                                    Very truly yours,



                                    BARTON, KLUGMAN & OETTING LLP
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