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April Meeting Notice Minneapolis
Date: Wednesday, April 10, 2019
Topic: US-70, New Mexico – A Geotechnical Overview of New Mexicos First Highway Design-Build Project

The US 70 project, located in the Hondo Valley between Ruidoso Downs and Riverside, was the first Design-Build highway project for the State of New Mexico. US 70 is a major east-west route, which; through the Hondo Valley is one of the most traveled and dangerous highways in the State. Twenty-seven fatalities occurred in this section between 1998 and 2002 motivating the New Mexico State Highway Transportation Department (NMDOT) to widen 38-miles of the highway.

We faced numerous challenges during the design and construction of the project that ranged from the team’s expedited schedule to geology that varied from strong limestone to weakly cemented soils to providing sufficient design information to satisfy the State’s design requirements. These challenges were overcome using empirical methods and pressuremeter testing, completing kinematic evaluations in the field for the “hard” rock slopes, and using back analysis of failed slopes in the “weak” rock and employing controlled blasting techniques to mitigate overbreak of the backwalls. Without finalizing the design prior to some of the widening, construction proceeded at the risk of the contractor. Our initial design was updated (and changed appropriately) once the all geotechnical information was available and during a stringent review process by the owner.


Location: Rose Vine Hall (downstairs at Grumpy's Bar & Grill)
2801 Snelling Ave. N., Roseville, MN (Mapquest link)
6:00 pm Social Hour, Sponsored by Braun Intertec
7:00 pm Dinner: Buffet Style
$25 members; $30 non-members
8:00 pm
Presentation — Chad Lukkarila, Braun Intertec

Paid 2018-2019 MGS Members receive a $5 meeting discount on the meal costs listed.
The cost for full-time students is $10, payable to MGS at the door.

Reservations: Register
Requested by noon, Friday, April 5th, 2019

  (One professional development hour toward continuing education requirements for Professional Engineers is available.)


Website questions or comments? Please contact sbryan@idpage.com ∙ MGS questions or comments? Please contact Kyler Bender at kyler@northerntechinc.com