611 Bill Summers International Blvd, Weslaco, TX 78596, US

(956) 968-2194

Sigler, Winston, Greenwood & Associates
Since 1945

About Us

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President-CEO-Principal Engineer

Randall C. Winston, P.E.

Mercedes High School

Texas A&M University BSCE

Texas A&M University Masters in Civil Engineering 

33 years experience 


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Vice President- Principal Engineer

Joseph B. Winston, Jr. P.E., RPLS

Mercedes High School

Texas Tech University BSCE

48 years experience 




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Chief Financial Officer

Ronald Peynado

Mercedes High School

University of Texas- Pan American 

19 years experience 

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Engineer

Jose G. Reyes P.E. 

Prepa. Fco. J Mujica

University of Texas San Antonio

23 years experience 




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Engineer

Isaac Huacuja, EIT 

Texas A&M Agricultural Engineering 

University of Texas Rio Grande Valley BSCE

4 years experience

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Engineer

Sergio Gonzalez

Graduate Engineer

Donna High School

University of Texas Rio Grande Valley

1 year experience 

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Graduate Engineer - Inspection

Jorge Rios, EIT (Mechanical Engineer)

Sharyland High School

University of Texas Rio Grande Valley

17 years experience 

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Inspection - Field Team Foreman

Don Bloom

Harlingen High School

University of Texas- Pan American

35 years experience 

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GIS Specialist - Drafting - Artist Rendering

Rebecca Salinas

Mercedes High School

South Texas College

5 years experience 

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Senior CADD Tech

Manuel Valdez, Jr.

Donna High School

43 years experience 

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CADD Tech

Douglas Franco

Mercedes High School

Texas State Technical College

15 years experience 

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CADD Tech

Adan Flores

Raymondville High School

Texas State Technical College 

21 years experience 

Project Coordinator

Cynthia Meza

University of Texas Rio Grande Valley

20 years experience 

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Client Relations

Chris Winston

Mercedes High School

University of North Texas

2 years experience 

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Grant Administration - Client Relations

Christian Winston

Winston Academy

Texas A&M University

5 years experience

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Administrative Assistant

Delaila Constante

Mercedes High School

10 years experience 

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Administrative Assistant

Candice D. Zamora 

Mercedes High School

University of Texas- Pan American 

9 years experience