NM 31-NM 128 Design-Build

along NM 31 from US 285 to US 62 and along NM 128 from NM 31 to the NM/TX state line
NMDOT Control No. 2104330

Project Overview

The NMDOT is in the design development stage for the NM 31 and NM 128 Alignment Study and Design-Build Project in Eddy and Lea Counties. The NM 31 portion of the project extends 22 miles from its junction with US 285 to US 62. The NM 128 extends 60 miles from NM 31 through the City of Jal to the Texas state line. A separate project (CN 2104490) will be delivered to improve the intersection of US 285 and NM 31 by upgrading it with a new signal system and is targeting construction in 2022 for that project.

Both NM 31 and NM 128 traverse Bureau of Land Management, State Land Office, and private lands, mainly serving the oil and gas industry. Initial evaluations have determined that the highways need pavement improvements, additional lanes and shoulders, passing lanes, sight distance/vertical alignment improvements, and drainage improvements. The study phase will document the existing conditions, identify traffic and safety areas of concern, investigate sensitive cultural and biological resources, seek public and agency feedback, identify improvement alternatives and arrive at a recommended improvement alternative. The study will also create a priority implementation plan consisting of a phased approach to delivering all the improvements, should funding levels require multiple construction contracts.

NMDOT has selected the first phase of improvements to be delivered using the Design-Build procurement methodology.  This provides maximum funding flexibility for NMDOT and its’ partners and allows NMDOT to aggressively move towards starting construction of the improvements sooner. This is possible as NMDOT needs to complete 30% of the design, in the form of an Enhanced Conceptual Design, before it is released to potential Design-Build Contractors for bidding, and thereafter to the selected Design-Build Contractor for completion. This streamlined approach to design significantly shortens the timeline for the start of construction. NMDOT’s last use of Design-Build was for the Paseo Del Norte/I-25 interchange reconstruction project in Albuquerque.

Project Area Map (click on image to enlarge).


Eddy and Lea


District 2

STIP Number


Study & Design


Michael Smelker
District 2 Asst. Engineer
(575) 202-3339

Public Involvement

Public feedback is needed once again to further incorporate refinements of the recommended alternatives to continue to advance the study.

Virtual public meetings were hosted on May 2nd and May 24th, 2022.  The purpose of these meetings was to share information and gather input from the public about the study and potential improvements in development.  Recordings of the meeting events and presentation PDFs are available below.

Submit your comments/questions before June 24th by email, mail, phone, or with the online comment form.

Mail Us: 
WSP USA c/o Jennifer Hyre
Attn:  NM 31-128
2440 Louisiana Blvd. NE, Suite 400
Albuquerque, NM  87110

Call Us:  (505) 878-6577
If no answer, please leave your name & best phone number and we will call you right back!

Procurement information


If you have additional questions or comments about the study, please fill out the form below.

Previous Public Involvement

Virtual public meetings have been hosted on August 31, 2021, September 14, 2021, May 2, 2022, and May 24, 2022.  The purpose of these meetings has been to share information and gather input from the public about the study and potential improvements in development.

Public Meeting #1 – video recording (English)
August 31, 2021

(Due to a technical issue that occurred on August 31, 2021, a live recording of the question and answer session is unavailable.)

Public Meeting #1 (Jal) – video recording (English)
September 14, 2021

Public Outreach & Comment Summary (PDF)
February 2022

Public Meeting #2 – video recording (English)
May 2, 2022

Public Meeting #2 – Presentation (PDF)
May 2, 2022

Public Meeting #2 (Jal)- video recording (English)
May 24, 2022

Public Meeting #2 (Jal)- video recording (Spanish)
May 24, 2022

Public Meeting #2 (Jal) – Presentation (PDF)
May 24, 2022

Project Resources

Study Recommendations

Phase AB - Preliminary Recommendations Overview
Phase AB - Recommended Construction Phasing to Design-Build Phasing
Phase A - Preliminary Recommendations & Roundabouts

Resources (Mainline)

MAINLINE 3-Lane Alternative
MAINLINE Depressed Median Alternative
MAINLINE Flushed Median Alternative

Resources (Jal Segment)

JAL MAINLINE Alternatives Status Summary
JAL MAINLINE 3-Lane Alternative
JAL MAINLINE 4-Lane Alternative
JAL MAINLINE 5-Lane Alternative
JAL MAINLINE Preliminary Right-of-Way Layout
JAL MAINLINE Preliminary Recommendations


Do you know the rules of the roundabout?
Ohio DOT Roundabout Choose-Your-Lane
WisDOT Roundabouts and Truck

Traffic Modeling Results for NM 128 in the City of Jal

The Study Team has investigated improving a segment of NM 128 within the City of Jal and has identified a preliminary recommendation of a 3-lane segment, including new traffic signals a the NM 128 intersections with both NM 18 and 3rd Street. To arrive at this recommendation, the Study Team performed a series of traffic models to assess the anticipated future traffic operations in Jal.  These traffic video models can be viewed below.

The goal was to determine the operation differences between stop sign and traffic signal control at the intersections.  All three videos contain the same traffic condition.  We invite you to review the Modeling Results, watch the Traffic Modeling Videos, and share your comments.

Traffic Modeling Results (NM 128 - City of Jal Segment)
Supplemental Traffic Modeling Results (NM 128 - City of Jal Segment)

Scenario No. 1 – All-Way Stop Control

at 3rd Street/NM 128 intersection and NM 18/128 intersection

Scenario No. 2 – All-Way Stop Control

at 3rd Street/NM 128 intersection and a new traffic signal at NM 18/NM 128

Scenario No. 3 – Signalization

at both 3rd Street/NM 128 intersection and NM 18/128 intersection

Project Timeline