Subsurface Utility Engineering/
Utility Coordination

Nobody likes project surprises, especially unknown utilities in the construction stage. Include Halff’s SUE/Utility Coordination team during your project’s design to locate utilities, determine conflicts, and evaluate alternatives to keep your project on schedule, reduce contractor claims and delays, enhance construction safety, minimize budget contingencies, and prevent service interruptions. Even if utility issues arise during construction, we can respond quickly to solve problems on multiple project types.


Our Subsurface Utility Engineering (SUE) team locates and identifies visible and underground utilities early in a project’s design process to avoid costly conflicts and dangerous safety hazards. Halff’s thorough subsurface utility engineering process reduces project costs, construction delays, and citizen inconvenience to ensure a safer, more efficient environment for construction personnel and the general public.

All SUE services are performed in accordance with ASCE 38-02: “Standard Guideline for the Collection and Depiction of Existing Subsurface Utility Data.”

  • Quality Level A: utility locating, non-destructive vacuum excavation or potholing
  • Quality Level B: utility designating
  • Quality Level C: visible surface features
  • Quality Level D: records research
  • 3D Utility Mapping in Microstation or AutoCAD format


Our Utility Coordination (UC) team uses SUE and design plans to determine conflicts and evaluate alternatives to resolve conflicts. When possible, Halff’s UC professionals will recommend minor design changes to avoid costly future utility relocations. The UC team will coordinate with each utility owner, coordinate new locations for affected utilities, review relocation plans for conflict resolution and compliance, prepare and review utility agreements/permits, and coordinate construction phasing/sequencing. Because utility adjustments are part of a project’s critical path, the Halff UC team proactively manages utility coordination to ensure your project stays on schedule.

Halff is the largest provider of utility coordination/SUE services in Texas, and our expertise and quality is unmatched. Our staff has worked on more than 600 utility agreements for highway projects totaling in excess of $350 million in relocation costs, designated more than 10 million linear feet of existing utilities (Level B SUE), and performed thousands of vacuum-excavated test holes (Level A SUE).

Notable projects

SH 161 from I-20 to I-30  | IRVING/GRAND PRAIRIE, TEXAS

SH 360 at SH 180  | ARLINGTON, TEXAS

I-35 from Loop 363 South to Loop 363 North  | TEMPLE, TEXAS

SH 71 from Serene Hills to Hamilton Pool Road and from Southwest Parkway to Scenic Brook Drive  | AUSTIN, TEXAS

I-410/US 90 from FM 1604 to Culebra Road and SH 151 from Potranco Road to Pinn Road  | SAN ANTONIO, TEXAS

US 59 from SP 10 to West of FM 763  | HOUSTON, TEXAS

I-635 from US 75 to I-30 and I-30 from west of Gus Thomasson Road to east of Galloway Avenue  | DALLAS, TEXAS

US 62/180 from Grimes Street to Sanger Street  | HOBBS, NEW MEXICO

I-35 from FM 2063 to Loop 340/SH 6  | WACO, TEXAS

SL 335 from Bell Street to 0.4 miles north of SW 9th Street  |  AMARILLO, TEXAS