Expertise: MTBM (Microtunnel Boring Machine), Annular Pressure Grouting, Products Pipe Pressure Testing
Deep circular excavation with multiple concentric steel sheet piles, ladders, and muddy water at the bottom of a construction shaft

FWSD #23 Tunneling

Client: Reytec Construction
Location: Houston, TX
Status: In Progress
Contract Value: $1.1 Million
Trenchless Method: Microtunneling (MTBM)
Pipe Diameter: 72" Steel Casing
Length Installed: 460 LF

Summary

• 811 Mark-out
• Install 72” Steel Casing using Micro Tunneling
• Contact Grout annulus of 72” casing

Gallery

  • Deep circular underground shaft under construction, with timber/steel ring walls, large yellow and gray ducting, and workers in hi‑vis gear on a platform below.
  • Construction site with workers in high-visibility vests operating a large yellow CAT excavator and green machinery under a cloudy sky
  • Workers in hard hats and high-visibility vests inspect a large cylindrical industrial shaft with rusted steel walls and yellow ducting above.
  • Construction shaft with wooden/steel rings, a green pump/motor, and scattered orange cables inside a circular excavation area.
  • Deep circular excavation with multiple concentric steel sheet piles, ladders, and muddy water at the bottom of a construction shaft
  • Large white cylindrical industrial component with blue ends on a flatbed trailer, suspended by crane chains during loading.
  • Large industrial cylindrical machine being lowered or installed, with heavy chains and a crane hook visible on a flatbed trailer.
  • Large cylindrical industrial machine mounted on a flatbed trailer, with a crane and greenery in the background
  • Large white cylindrical tank being lowered by chains into a deep circular industrial shaft.
  • Large blue cylindrical fuel/storage tank on a concrete base at a construction site, with safety labels and a blue control box on top colors blue and gray surroundings.
  • Yellow industrial machinery with control panel and hoses on a metal frame outdoors near a cinder-block wall; stacked pipes to the right.
  • Industrial pump setup on a rocky construction site with hoses and chains attached; orange safety fencing in the background.

PROJECT OVERVIEW

Big River Trenchless is performing microtunneling operations for wastewater infrastructure improvements associated with FWSD #23. The project includes installation of large-diameter casing and associated shaft, grouting, and tunneling operations to support future system upgrades.

Key Highlights

  • 460 LF of 72-inch steel casing installed
  • Contact grouting operations
  • Shaft support and dewatering activities
  • Entry and exit seal installation
  • Herrenknecht AVN1500 MTBM equipment utilized