Trenching

Special Assessment District #228

Removing boulders to allow trenching for utilities

Removing boulders to allow trenching for utilities

Owner: City of Albuquerque
Engineer: Wilson & Company
Location of Project: Albuquerque, NM
Contract Amount: $26,750,711
Completion Date: June 2014

AUI’s largest site development project to date, Special Assessment District (SAD) #228 consisted of 72-acres of site work including:

  • Over 65,000 CY of rock excavation requiring extensive blasting and rock trenching
  • Over 200,000 CY of import fill material
  • Over 50,000 TN of base course material
  • Over 200,000 SY of superpave asphalt concrete
  • Over 90,000 LF of concrete work that included curb and gutter, sidewalks, ADA ramps, and driveways
  • Over 12,000 LF of reinforced concrete pipe in various diameters from 18-in to 96-in
  • Approximately 38,000 LF of 8-in to 18-in diameter PVC sanitary sewer pipe installation, 2,000 LF of 6-in ductile iron forcemain, and 1,500 LF of 2-in PVC forcemain, plus a lift station
  • Over 200 manholes ranging in diameter from 4-ft to 10-ft
  • Approximately 42,000 LF of 4-in to 12-in diameter PVC waterline requiring over 30,000 lbs of ductile iron fittings
  • Water and sanitary services to approximately 430 individually owned properties
  • Over 66,000 LF of dry utility installation to include electrical, communication, and natural gas infrastructure
  • Signalization and lighting
  • Signage and striping
  • Garden walls and landscaping
  • Bike trail

The extensive rock removal on the project had numerous challenges. Basalt formations were very diverse and unpredictable; a single formation could contain voids, veins, and cracks which made blasting difficult due to the unpredictable release of pressure. Blasting was required directly above existing residences and both above and adjacent to active arterial roadways. The entire site was adjacent the Petroglyph National Monument, containing federally protected artifacts. We mitigated these challenges by using vibration and air blast monitoring for all rock blasts, utilizing both permanent and roving monitoring stations.

The fixed Owner’s budget with minimal contingency required careful budget management, especially since the entire design was preliminary and had to be constantly modified to meet the intent. We were also required to provide access to over 300 private land owners throughout the project.

Mayor Richard Berry and other dignitaries cut the ribbon on the finished Project

Mayor Richard Berry and other dignitaries cut the ribbon on the finished Project

Angel Fire PID 2007- Roadway and Infrastructure Improvements

Angel Fire PID (Owner)
Location of Project: Angel Fire, NM
Contract Amount: $24,541,188.31

AUI’s work in Angel Fire, NM on the Angel Fire PID 2007 – Roadway and Infrastructure Improvements Project was a Design-Build Project. The overall scope of this design/build contract could be broken into two categories:  (1) Roadway improvements, and (2) utility infrastructure improvements.  Due to sub-phasing tied to project funding, this was a multi-year contract spanning from 2009 through anticipated completion in 2012.  Roadway construction (approx. 18.5 miles) included widening, grading, bank stabilization and surfacing in addition to trenching of approximately 291,000 LF for electrical and telephone lines. The site utilities scope of work included approximately 98,100LF of C-900 waterline (82,72LF of 8” and 15,380LF of 6” respectively) in addition to 2,700LF of 4” DI pipe. This project also included placing approximately 38,590LF of 8” SDR 35 PVC sanitary sewer pipe.  AUI was also contracted to include two water storage tanks; a booster station; gravity collection lines and service stub outs in addition to three lift stations.

In consideration of the project location, AUI completed this project in phases that correlated with seasonal changes to ensure a safe working environment and a quality end product.

Project News

Catwalk Trail Project Wins National and Statewide Awards

April 4, 2017–

Numerous industry groups have recently awarded some of their most prestigious honors to the Catwalk Trail Design/Build Project. Read more…

Employee News

Two New Members Added to 25-Year Club

AUI 25-Year Club Members

June 24, 2016–

Michael Rocco, Trenchless Division Manager, and Jesus Estrada, Concrete Foreman, are the newest members of AUI’s 25-Year Club. Read more…