UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No.  )

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o Preliminary Proxy Statement

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o Definitive Proxy Statement

þ Definitive Additional Materials

o Soliciting Material Pursuant to §240.14a-12

 Dycom Industries, Inc.

 (Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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November 11, 2010

Dear Shareholder:

We have previously sent to you proxy material for the Annual Meeting of Shareholders of Dycom Industries, Inc. to be held on November 23, 2010.  Your Board of Directors recommends that shareholders vote FOR all items on the agenda.

Your vote is important, no matter how many or how few shares you may own.  To ensure that your shares are represented at the meeting, please take a moment to vote your shares TODAY by telephone or via the Internet.  Your prompt response is greatly appreciated.  You may also sign, date and return the enclosed proxy card in the envelope provided.

Very truly yours,

 

Steven Nielsen

President and CEO

IMPORTANT – TIME IS SHORT!

You can vote your shares by telephone, or via the Internet.

Please follow the easy instructions on the enclosed proxy card.

If you have any questions, or need assistance in voting

your shares, please call our proxy solicitor,

INNISFREE M&A INCORPORATED

TOLL-FREE, at 1-888-750-5834.