Road Construction
Contact Info

Cone Zone Report:
Wk of April 5, 2021 


The projects listed in this section are being managed by County Public Works staff through contractors. For more information, please e-mail, call 662-8150, or visit the “Projects/Public Works” link at Please slow down and use caution within the construction work zones. Please note the below information is based on a schedule provided by the contractors and may change due to weather or other delays.  

Public Works Projects: 


Canyon Rim Trail Underpass 

AUI, Inc. of Albuquerque will continue work to construct the Canyon Rim Trail Underpass. The project includes extension of the 10 ft. wide hard surface trail connecting the terminus of the Canyon Rim Trail and existing trailhead to Entrada Drive beneath NM 502 via a reinforced concrete box structure.  


Due to the amount of construction activity that includes trenching, excavation and utility relocation near the trailhead, the trailhead parking lot and a 100 ft. section of the trail near the trailhead will be closed for safety. During this week's construction, crews will be working along the westbound and eastbound shoulders of NM 502 to clear and remove vegetation, but no vehicular travel lanes will be impacted at this time. AUI will be hauling excess material from project site to a site off DP Road. They will be using end dump trucks to haul excess material.  Traffic signs and devices will be installed. Motorists, bicyclists, and pedestrians and are advised to stay alert for construction personnel and equipment and use caution traveling through the work zone. 


ADA improvements along Trinity Drive from Oppenheimer to 39th Street 

Beginning Monday, crews with GM Emulsion will restart construction of pedestrian and ADA improvements along Trinity Drive from Oppenheimer to 39th Street. Late last year, crews completed similar work on the north side of this segment of Trinity Drive. Comparable improvements are now scheduled for the southern side which include replacement of damaged curb, gutter, and sidewalks.  


Work is scheduled 7:00 a.m. to 5:00 p.m. Monday through Friday, weather permitting.  

Traffic signs and devices will be installed to shift vehicular, bicycle and pedestrian traffic around the work zones. Access to residents and businesses as well as services such as mail delivery, emergency services, trash and recycling collection will be maintained. Motorists, bicyclists, and pedestrians and are advised to stay alert for construction personnel and equipment and use caution traveling through the work zone. 


Barranca Mesa – Warranty Work 

TLC Plumbing and Utility will conduct construction activities beginning this Monday and continuing through Monday, April 12. Contractor will be working on Tecolote and Camino Encantado.  


The contractor will coordinate with residents when removal of vehicles from their street will need to take place.  Work hours are Monday through Friday 7:00 a.m. to 4:00 p.m.  


Services such as mail delivery, trash and recycling collection and emergency services will be maintained.  


Kiddie Pool/ Multi-Generational Pool Construction (addition to Aquatic Center)

CGI will be hauling excess material from the project site to a site off DP Road.  The shoulder is closed on the north side of Canyon Rd next to the Aquatic Center.  In addition, the sidewalk next to the Nature Center is closed on the north side of Canyon Road.  These closures are expected to continue throughout construction, until the completion of the project in early 2022.    



Traffic & Streets Division Projects: 

The projects listed in this section are being conducted by County Traffic & Streets crews. For more information, please e-mail, contact Scott Halder, Streets Superintendent with questions or concerns at 505-412-7854. Please slow down and use caution within the work zones. Please note the below information may change due to weather or other delays.  

Range Road Shoulder Work

Crews will be working on clearing and repairing shoulders on Range Rd while using a flagging operation Monday through Friday, beginning at 9:00 a.m. and ending at 3:30 p.m. each day.


Spring Cleaning on Canyon Rd., Trinity Drive, and Diamond Drive

Crews will be cleaning out islands, sidewalks and handicap ramps Monday through Friday from 8:30 a.m. to 3:30 p.m. This work will be accomplished with a street sweeper and no closures are anticipated. Please be observant of activities around the sweeper and proceed with caution while traveling around the equipment.



Dept. of Public Utilities Projects:

The projects listed in this section are being managed by the County’s Dept. of Public Utilities staff through contractors. For more information, contact the Customer Care Center, Monday through Friday, from 8 a.m. to 5 p.m. at 505-662-8333 or email


Planned Asphalt and Concrete Repairs – Various locations

GM Emulsion crews will continue repairs to emergency utility asphalt and concrete cuts that occurred during the winter. Crews will rotate to various locations throughout the Los Alamos and White Rock neighborhoods throughout the month of April.  Some minor traffic delays are expected.


Traffic control equipment, such as signage, barrels and barricades will be erected around the work zones.  Flagging operations may be deployed to assist with traffic flow. Crews will begin at 8:00 a.m. and work until 5:00 p.m.  Most locations slated for repairs are on residential streets and should not take more than two to three days. Traffic impacts should be minimal.  Motorists are advised to use caution and pay close attention to signage around the work zone.



Non-County Projects:

The following road construction updates are posted below in the interest of keeping residents informed, but are being managed or conducted by others. Please obey all traffic devices and slow down in work zones. Please direct questions or concerns to the project contact listed below:


Traffic Alert! Lane Shift to North Side of NM502 starts Monday for Roundabout Project 

Beginning Monday, east bound traffic east of the Round-About will be shifted to the north side of NM 502 and channeled back into the east bound lane in front of the Crossroads Church. This is necessary to demo and build and the remaining south side of NM 502. The traveling public is advised to exercise caution while traveling through this area.


Canyon Road will be closed at First Street and the intersect of W. Manhattan Loop and Canyon Road. Access to the affected residence will be accommodated accordingly. This closure is necessary to demo and build the new alignments of Canyon Road and Manhattan Loop.


Arroyo Lane will be required to access NM 502 on the north side with east and west bound traffic. A STOP sign will be in place at that junction with NM 502. Those motorists are encouraged to pay attention to the traffic control signage.


Motorists are reminded the posted speed limit through the project is 25 MPH.


R and M Construction - 1010 Central Ave., Sidewalk Closure

Sidewalk access on the north side of Central Ave from 1000 Central Ave. to the entrance to the Bradbury Museum complex will be closed to pedestrian traffic starting Monday and will continue through April 30. Pedestrian traffic will be detoured to the south side of Central Ave at Knecht Street.  Pedestrian traffic will then be detoured at the intersection of Central Ave and 15th to the north side of Central Ave. Contact: Robert Sanchez 505-927-2027.  


Marcon Excavating – Arkansas Ave Road Utility Infrastructure Replacement

Arkansas Ave between Diamond Drive and 41st Street will be closed to through traffic until May 17 while crews replace existing water and sewer lines and connect to County infrastructure for Arkansas Place and the new townhomes being constructed. Contact: Kris Luster 505-690-0587.  


DP Rd (Work related to Canyon Walk Apts and The Bluffs – Bethel Development)

Qualcon Builders, LLC - 120 DP Road Utility Infrastructure Replacement and Roadway Reconstruction

Next week, trenching activities for the storm drain installation will impact the segment of DP Road east of the Canyon Rim Trail crossing to Fire Station #2 with the roadway restricted to one-lane traffic controlled by a flagged/signaled system.  One-lane traffic restrictions will occur only during hours of construction potentially from 7:00 am to 7:00 pm daily.  Access to businesses in this area will be maintained during these activities. 


The contractor is working in the right-of-way to replace existing utilities with upgraded services related to the new Canyon Walk Apartments (under construction) and The Bluffs senior housing (soon to be constructed). After completion of the storm drain work, the roadway reconstruction, including installation of curb and gutter, and sidewalks will begin with the final paving being the last activity.  All construction activities related to the reconstruction of DP Road are currently expected to be substantially completed by the end of April. Contact: Please direct questions and concerns to the Public Works Liaison for this project: Keith Wilson, 505-231-3961




About this page... This page provides citizens with basic information on County and non-County road construction projects. We are maintaining the page in the interest of keeping our citizens, visitors and commuters informed as a public service with one landing page where all information or links to information can be found.

About the Cone Zone...
The weekly Cone Zone report is posted here at the top of the page on Friday afternoons from March through November, with special emphasis on public outreach for the NM502 Roundabout project, which is being constructed by the State of New Mexico's Department of Transportation. Construction started last year and wraps up by Dec. 2020 in Los Alamos. 

More about the State of NM DOT's NM502 Reconstruction & Roundabout Project...

Motorists are asked to use caution in the area of NM502, DP Road., Central Ave., 4th Street, Canyon Rd., and other roads in the area of the NM502 Reconstruction & Roundabout Project. Staging for the equipment and infrastructure needed for the NM502 project (a fenced, secure area for Star Paving) is located on DP Road.

Here is a project drawing showing what the NM502 Roundabout will look like when completed (furnished to the County by the State of NM DOT)

Due to utilities conflicts along NM502 for the new roundabout to be constructed, new storm sewer, retaining walls and grade changes associated with the new road design, infrastructure for water, sewer, electric, natural gas and fiber optics will be replaced and relocated as follows:

• Replace and relocate 2000 feet of water transmission line
• Replace and relocate 4500 feet of water distribution lines, including all service connections and fire hydrants in the corridor
• Replace and relocate 4000 feet of natural gas lines including all services lines in the corridor
• Replace and relocate 350 feet of sewer lines
• Replace and relocate 5000 feet of underground electric lines, including duct banks, conductors, transformers, vaults and all service connections in the corridor
• Replace and relocate 1400 feet of the fiber optic systems owned by Los alamos County and Comcast

Here is a link to the NMDOT webpage for all District 5 Proposed and Active Projects with additional information from the State. Scroll past all Proposed projects to the bottom of the page where you will see NM502 listed as an Active project. The State has posted additional information about roundabouts on this page, along with the March 20, 2019 public meeting presentation. The presentation shows many aspects and views of the construction project and detours that can be anticipated as it proceeds over the next two years. 

Nearby projects:

Repaving of NM502 from Tewa Lp east to County Line
The roadway is in need of repaving and the State DOT anticipates that project will occur this year, likely in concert with the Roundabout construction. 

N3B - TA-21 Clean Up
N3B and their contractor are working in 2020 and 2021 on an environmental remediation/clean up project at the former TA-21 site (far eastern edge of DP Rd).

Here is a Fact Sheet about that N3B project which involves hauling away non-radioactive or low-level waste after properly packaging it in containers. Truck traffic on DP Rd and Trinity or NM502 is expected to be minimal at least until Fall 2020. 

Future DP Road Infrastructure (long-term County project)

The County installed the first part of infrastructure for the DP Road area in 2020, and is continuing infrastructure work into 2021. Additional land parcels will become available for development after the TA-21 remediation is completed. These parcels are part of DOE Land Transfers that could be used for future light industrial or residential development. The long-term plan is for infrastructure to extend to the TA-21 site as a "spine" for future development on the north and south side of the road. DP Road needs to be upgraded to include basic infrastructure that could be used by existing or new businesses or homes. For example, there is currently no sewer line in this area. The County Council approved funding for this project for FY21, and the scope of the project is being determined. Public meetings will be held, especially with those businesses located along DP Rd, to include them in the early planning and design of the DP Rd area. 

What else do I need to know?

For general questions about construction, you may call the Customer Care Center at 505-662-8333 and a representative will direct your call to the appropriate office. 

For feedback on this webpage, send an e-mail to the webpage administrator.

To view traffic in various areas around Los Alamos and White Rock visit our new page
camera views around town

Watch for updates on this page for Future Projects such as the ones listed above, or, for new projects to be added as they are identified. As the County gets more details, updates will be posted here.

Construction can be difficult and present special challenges for businesses caught in the construction zones and related/adjacent areas. Motorists tend to avoid orange barrel zones and this can have significant economic impacts on businesses. Los Alamos has many small, locally-owned and operated restaurants, specialty shops and stores on the eastern edge of Los Alamos. The County encourages residents and visitors to support local businesses, especially those on DP Road, which will likely be impacted by the construction. Other businesses at Entrada Business Park, East Gate, along Trinity/Knecht (Mari Mac and Smith's Marketplace and further west on Trinity) as well as those on Central Avenue may likely be impacted, too. The County is working with MainStreet and the Chamber of Commerce to find ways to mitigate impacts and support them, but your help is urgently needed! Allow extra time for patronizing these businesses, but please don't shy away just because of construction! They need your help to continue to operate all of your favorite and valued restaurants, shops and other small businesses to be able to provide you great products and services.