NCS Consultants, LLC Projects - Veterans Memorial Overpass
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This project has been constructed and is in service.

View of one of the approach walls on the VMO project. Pima County Department of Transportation (PCDOT)has rebuilt the Veterans Memorial Overpass in Tucson , Arizona. The contracting company performing the construction submitted a value-engineering (VE) proposal to replace all Cast-in-Place (CIP) retaining walls on the Veterans Memorial Overpass (VMO) with Mechanically Stabilized Earth (MSE) walls. PCDOT retained NCS to assist with the evaluation of the VE proposal.

Update 5/15/08: NCS is currently performing a task under our as-needed contract with Pima County to review survey monitoring data collected at the VMO project site.

Update 2/17/2006 - NCS has been presended with a certificate of appreciation by Pima County for our work on the VMO project. For more details, visit the Awards page.

A view of the North abutment of the VMO project after placement of the girders.

As part of this evaluation, NCS' scope of work included the following tasks:

  • Setup the criteria for MSE wall design and modify the ADOT spec as necessary.
  • Review of the VE design concepts including checking MSE wall design calculations and drawings, providing comments and/or recommendations, and comment/recommendation resolution.
  • Site meetings during VE evaluation.
  • Construction Inspector Training
  • Field support during construction
  • Setup of instrumentation plan and reduction of data

The spread footing atop the MSE Wall north abutment on the VMO project. The Veterans Memorial Overpass consists of a single-span bridge over the Tucson Diversion Channel, and a multi-span bridge over a divided highway and Union Pacific Railroad tracks. For the abutments for the multi-span bridge spread footings on top of MSE walls are used.

This project has been constructed and is in service.

Multi-span bridge over divided highway and railroad tracks

Abutment consisting of spread footings on top of MSE walls.

Download a one page Collection of Wall and Abutment Photos (224 KB)

Download presentation notes from Ed Nowatzki's VMO presentation at the 2005 Roads & Streets Conference (1.9 MB)

A special tour given by NCS and Pima County to members of ADOT on May 5, 2005. From left to right are Pete Anderson, Ed Nowatzki, Greg Gentsch, Doug Forstie, Dan Lance, Tom Kilargis, Perry Powell, Norm Wetz, Shawn Farahzadi, Naresh Samtani, Bill Hurguy, Steve Haire, Mike Myers, and J.J. Liu.

A view from the corner of the north abutment on the VMO project.

This photo shows a wider view of the MSE Wall north abutment, the spread footing on top of the abutment, and the closest piers for the VMO project.

Photos
A view from the top of the north abutment on the VMO project. This is the location where the footing will be constructed. Placing MSE wall facing panels on the VMO Project. Placing MSE wall facing panels on the VMO Project. Mr. Samtani indicating the correct placement of a connection bolt between a reinforcing strip and an MSE wall facing panel. Mr. Samtani showing MSE wall construction in progress. An example of lightweight compaction equipment to be used within 3 ft. behind the wall face. A view of the North abutment of the VMO project after placement of the girders. A view of the North abutment and two of the piers on the VMO project after placement of the girders. The audience for a presentation and tour given by Mr. Samtani on MSE walls, and the Veterans Memorial Overpass project. Mr. Samtani presenting on MSE walls, and the Veterans Memorial Overpass project. A tour group sponsored by the ASCE Young Members Forum (Southern Arizona Branch) guided by Mr. Samtani for MSE walls and the Veterans Memorial Overpass project. Mr. Samtani talking about an MSE wall facing panel for a tour of the Veterans Memorial Overpass project. An excellent example of two different types of compaction equipment needed in the construction of MSE walls. The lightweight equipment is used within 3 ft of the face of the wall, and the heavy equipment is used behind as seen on the Veterans Memorial Overpass project. An inspector checking the compaction during MSE wall construction on the Veterans Memorial Overpass project. Naresh Samtani of NCS receiving a Certificate of Appreciation for work on the Veteran's Memorial Overpass (VMO) project from Ramon Valadez of the Pima County Board of Supervisors. Naresh Samtani and Ed Nowatzki of NCS receiving a Certificate of Appreciation for work on the Veteran's Memorial Overpass (VMO) project from Ramon Valadez of the Pima County Board of Supervisors. Naresh Samtani and Ed Nowatzki of NCS receiving a Certificate of Appreciation for work on the Veteran's Memorial Overpass (VMO) project from Ramon Valadez of the Pima County Board of Supervisors. A Certificate of Appreciation received by NCS for work on the Veteran's Memorial Overpass (VMO) project. NCS was awarded the 2005 Marvin M. Black, Excellence in Partnering Award by the Associated General Contractors of America for our work on the Veterans Memorial Overpass Improvement Project.
 
 

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