Subsidiary: Sully Miller Holding Co.


Sully-Miller Contracting Co., the Colas USA subsidiary that operates throughout Southern California, is a company with nearly 100 years in the construction industry. Since 1923, Sully-Miller has become one of the premier construction contractors in Southern California, building much of the region’s infrastructure including airports, seaports, rail and intermodal, military/federal, roads, highways, and specialty projects. To learn more about Sully-Miller Contracting Co. visit  

Throughout Colas USA, we provide competitive pay, outstanding benefits, career advancement opportunities, professional education, and extensive training for every employee. We pride ourselves on upholding the highest standards of safety, environmental conservation, and ethical conduct as we strive to grow our infrastructure products and services through empowering and developing our people, fostering innovation, utilizing new technology, and maximizing vertical integration at all levels of the company’s value chain. To learn more about the Colas USA Family of Companies, please visit

Sully-Miller Contracting Co., and the rest of the Colas USA Family of Companies, is part of the Colas Group, the worldwide leader in transportation infrastructure construction and maintenance. For information on our international network visit


Job Summary



We are currently looking for Interns. We have office and site locations in Orange, Los Angeles, and Inland Empire counties. Come pave the way with us and help us continue to build the Southern California infastructure! Internships available in the below departments. For detailed job descriptions please email

  • Human Resources
  • Safety
  • Quality Control
  • Accounting
  • Estimating
  • Project Engineer

Main Responsibilities


  • Varies by department 



  • Must be working towards a degree in the career of the internship
  • Must be available to work a minimum of 20 hours per week



  • Basic math skills with ability to calculate and analyze data
  • Excellent written and verbal communication skills
  • California driver's license and clean driving record
  • Experience with Word, Excel and Power Point
  • Good organizational skills


Colas Inc. and its subsidiaries (Sully-Miller Contracting Co.) are an Equal Opportunity Employer. For details on the specifics of this commitment, please click here to view the EEO document. If you need an accommodation to access the information provided on this website, please contact Colas Inc. 973-290-9082 or send an email to

Nearest Major Market: Orange County
Nearest Secondary Market: Los Angeles