HOME ABOUT US PROJECTS CAREERS CONTACT EMPLOYEES EXPERIENCE THE DIFFERENCE. Pipeline Concrete Grading Local Union No. 783 SAFETY Safety is Our Priority. We Strive For A "Zero- Accident" Workplace. SAFETY FIRST FEATURED PROJECTS There is No Project Too Big That G.J. Gentry Can't Handle. VIEW PROJECTS CAREERS Consider Becoming Apart of Our G.J. Gentry Gen Eng Inc. Team. SEE OPPORTUNITIES 2020 Award Winner WANT MORE INFORMATION? REQUEST IT HERE FEATURED POSTS CONNECT WITH US BEST EMPLOYEES IN THE INDUSTRY G.J. Gentry General Engineering Inc. is most proud of the people it employs. READ MORE G.J. Gentry General Engineering Inc 1297 W. 9th Street Upland, CA 91786 Phone: 909.693.3391 Mon. - 7am - 4pm Tues. - 7am - 4pm Wed. - 7am - 4pm Thurs. - 7am - 4 pm Fri. - 7am - 4pm Sat. - CLOSED Sun. - CLOSED CONNECT WITH US Execute your project on time and with exceptional quality. OUR LOCATION OVER 100 YEARS EXPERIENCE OUR SERVICES - Pipeline - Concrete - Grading 1297 W. 9th Street Upland, CA 91789 Phone: 909.693.3391 BUSINESS HOURS Mon. - 7am - 4pm Tues. - 7am - 4pm Wed. - 7am - 4pm Thurs. - 7am - 4 pm Fri. - 7am - 4pm Sat. - CLOSED Sun. - CLOSED pipeline contractor southern California, general contractor southern California, grading southern California, concrete contractor, concrete southern California © 2021 by G.J. Gentry General Engineering Inc.