**EXHIBIT24**

 

**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ David H. Batchelder |   |
|--------|-------------------------|--------|
|   | David H. Batchelder     |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ Michael R. D’Appolonia |   |
|--------|---------------------------------|--------|
|   | Michael R. D’Appolonia     |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ William J. Flanagan |   |
|--------|-------------------------|--------|
|   | William J. Flanagan     |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ C. Scott Greer |   |
|--------|--------------------|--------|
|   | C. Scott Greer     |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ William H.  Mallender |   |
|--------|---------------------------|--------|
|   | William H. Mallender      |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ Michael P. Monaco |   |
|--------|-----------------------|--------|
|   | Michael P. Monaco     |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ Cordell Reed |   |
|--------|------------------|--------|
|   | Cordell Reed     |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ Dennis R.  Washington |   |
|--------|---------------------------|--------|
|   | Dennis R. Washington      |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ Bettina M. Whyte |   |
|--------|----------------------|--------|
|   | Bettina M. Whyte     |

 

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**POWER OFATTORNEY**

 

KNOW ALL MEN BY THESEPRESENTS, that the undersigned hereby constitutes and appoints Craig G. Taylorhis true and lawful attorney-in-fact and agent, with full power of substitutionand resubstitution, for him and in his name, place and stead, in any and allcapacities, to sign on his behalf as a director or officer or both, as the casemay be, of Washington Group International, Inc., a Delaware corporation, Form10-K Annual Report for fiscal year ended December 31, 2004, and any andall amendments thereto, and to file the same, with all exhibits thereto, andother documents in connection therewith, with the Securities and ExchangeCommission, granting unto said attorney-in-fact and agent, full power andauthority to do and perform each and every act and thing requisite andnecessary to be done in and about the premises, as fully to all intents andpurposes as each of them might or could do in person, hereby ratifying andconfirming all that said attorney-in-fact and agent, or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.

 

Pursuant to therequirements of the Securities Exchange Act of 1934, this Power of Attorney hasbeen signed below on the 9th day of February, 2005.

 
|   | /s/ Dennis K. Williams |   |
|--------|------------------------|--------|
|   | Dennis K. Williams     |

 

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