Trinity Underground
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Trinity Underground: Your local civil construction experts for grading, utilities, and concrete pads.
12/13/2025
Crews carefully excavate and reinforce the trench while maintaining full traffic control and safety protocols. This essential underground utility work helps keep neighborhoods running smoothly and prepared for future development.
09/18/2025
Surface prep done right 👷♂️ — laying the groundwork for durable and reliable concrete restoration.
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Phoenix, AZ
85040
Opening Hours
| Monday | 7am - 5pm |
| Tuesday | 7am - 5pm |
| Wednesday | 7am - 5pm |
| Thursday | 7am - 5pm |
| Friday | 7am - 5pm |
