Cone Zone Updates

Capital Improvement Projects: 

Los Alamos County Public Works' staff manages the projects listed in this section through contractors. For more information, please email lacpw@lacnm.us, call (505)662-8150, or visit the "Projects/Public Works" link at https://lacnm.com/pw-projects 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. 

Updated July 23, 2025

Performing Arts Center Parking Lot Closure

Access to the parking lot at the Performing Arts Center (PAC) building (a.k.a. "Little Theatre") at 1670 Nectar Street in Los Alamos, is closed to the public.

The closure will allow a much-needed health and safety focused renovation project to begin, aimed at improving the fire safety response time in case of emergencies. The project also includes abatement of asbestos materials from the ceilings and flooring of the PAC. The County secured the services of R & M Construction, LLC, to perform the installation of a Fire Suppression System, and Southwest Hazard Control, Inc. to perform asbestos abatement services.

The project is scheduled for completion by the end of October 2025. For more information, contact Sayeda at sobia.sayeda@lacnm.us or 505.661.2051.

Updated July 23, 2025

Traffic & Streets projects:

Los Alamos County Traffic & Streets Division staff manages the projects listed in this section. Please slow down and use caution within the construction work zones. Call Daniel Blea, Traffic and Streets Manager, for concerns 505-662-8112. 

Crosswalk Striping Continues

The Traffic and Streets Division will continue striping crosswalks at Los Alamos Public School sites and will continue daily until the project is completed. Work will begin daily at 6:30 a.m. and end by 4 p.m. The public is asked to be mindful of crews and striping equipment, follow all traffic control signs, and avoid driving on the freshly painted stripes.

Asphalt patching on 35th St. between Diamond Drive and Villa Street

Weather permitting, crews will be patching sections of asphalt on 35th St. between Diamond Drive and Villa Street from 7 a.m. to 4 p.m. daily. There will be a moving flagging operation in place. Work will begin on July 21 and continue until it is completed.

Wayfinding Sign Project Continues

The County Signs & Markings and Traffic Electrician crews will continue installing new wayfinding poles and signs throughout the county. They are currently installing the poles and signs on the shoulder of NM-502/East Road. Please be mindful of the crew and equipment.

Utilities Projects 

Los Alamos County Dept. of Public Utilities (DPU) staff manages the projects listed in this section. Please slow down and use caution within the construction work zones. Contact the Customer Care Center (505)662-8333, CustomerCare@lacnm.us, or visit ladpu.com/Projects.  

Updated July 3, 2025

LAFD Hydrant Testing Begins

The Los Alamos Fire Department (LAFD) will be testing fire hydrants throughout the county through September 1. The purpose of testing is to ensure that the hydrants will provide an adequate water supply for fire suppression and to flush out sediments that have accumulated in the water distribution system over the past year. These tests are part of the regular hydrant maintenance program and are conducted jointly with the Los Alamos Department of Public Utilities (DPU). Residents will see LAFD firefighters and vehicles throughout the community releasing water through the hydrants while they are conducting these tests.

Residents may see some discoloration in their water due to the amount and volume of flowing water after nearby hydrants are tested. If this is the case, residents should run the cold-water spigot located outside their home for a few minutes. This will usually resolve the issue. It is also recommended that residents avoid washing laundry until the water runs clear. 

Questions or concerns about this annual maintenance can be directed to the, Los Alamos County Customer Care Center at 505-662-8333 or CustomerCare@lacnm.us.

Broadband Project 

The Los Alamos County Broadband Manager manages the projects listed in this section. Please slow down and use caution within the construction work zones. Contact the Broadband Manager at Jerry Smith with any questions or concerns.  

Updated July 23, 2025

Los Alamos County officials announce field work for Los Alamos County’s Community Broadband Network (CBN) has begun. Data collection to support the design of this County-led fiber-optic network will continue through September 2025. The field work involves assessing planned aerial and underground routes throughout Los Alamos and White Rock, including on some private property. 

Residents may expect to see surveyors along streets evaluating utility poles and opening vaults as part of the data collection process. In some cases, Hexad’s crew will need to access a utility pole in a resident’s backyard. Affected property owners will receive a door hanger with the scheduled date and time window for entry.

Read the full news article here:

Utility field work for broadband project begins

Updated July 23, 2025

Non-County Projects:

The following construction project are not funded by Los Alamos County. Updates are included to keep residents informed of potential traffic impacts. Questions should be directed to the parties identified within each description. Please obey all traffic devices and slow down in work zones. 

Woodland Road Closure begins July 21

Parker Construction will close Woodland Road at #2902 beginning July 21 to repair a sewer line. The road will be closed during work hours from 7 a.m. to 5 p.m. An excavation plate will be placed over the trench during off-hours. Weather permitting, work is anticipated to be completed by July 31. For more information, contact Brad Parker with Parker Construction, LLC at 505-699-0212.

Tree removal along NM-502 to Begin Soon

Southwest Fire Defense will be working with the County Parks Division to remove trees and brush from the area located along NM502/East Rd. by Arroyo Lane. Work will begin over the next couple weeks.

Trinity Drive lane and sidewalk closure west of Knecht Street begins July 23

Comcast, LLC will close the westbound right lane and sidewalk along Trinity Drive on the west side of Knecht Street to bore behind the sidewalk and install conduit. Work will start July 23 and continue through August 8. Work hours are 8 a.m. to 5 p.m. daily. Vehicle and bicycle traffic will need to share the road. Pedestrian traffic will be detoured as needed. For more information regarding this project, contact Cablecom LLC, Adrian Rivas 505-225-5967.

Longview Drive Road Closure and Construction

WR Land Investment, LLC has begun work on Longview Drive in White Rock. Friday, April 11 at 8 a.m. and will continue through September 11, 2025. A road closure will remain in place during the entire project. The project includes demolition of existing buildings, installation of infrastructure, and construction of a new subdivision. The winding road adjacent to Longview Drive will be open during the project. If needed, there is a ‘turnaround’ location on the west side of the road closure. For questions or concerns regarding this project, please contact Philip Gurskey at 267-816-0299.

Hill Apartments and the Realignment of 35th Street at Trinity Drive (NM-502)/Pavilion Construction

Construction activities are almost completed on the south side of Trinity Drive near the new 35th St. intersection. Installation of the Rectangular Rapid-Flashing Beacon (RRFB) at the pedestrian crosswalk will be constructed at a later date. Traffic Control devices will be set up for minor pavement corrections for a limited time periods to protect the workers while both eastbound and westbound lanes will remain open.

Motorists and bicyclists will be asked to share the road when asked. Both sidewalks are open.

All questions, concerns, or special access needs should be sent to Pavilion Construction at 469-907-6045.

Updated July 23, 2025

Special Event Impacts:  

Los Alamos County does not all events noted on this list. Updates are included to keep residents informed of potential traffic impacts. Questions should be directed to the parties identified within each description. Please obey all traffic devices and slowdown in the area of the special events. 

Los Alamos County 2025 Triathlons Road Closure on Canyon Road July 19

Los Alamos County Community Services Department will host the annual Triathlon races Saturday, July 19. A road closure will be in place on Canyon Road between Central Ave. and Diamond Drive beginning at 6:30 a.m. and ending at 1 p.m. The route continues without a road closure from Diamond Drive to Omega Bridge, then to West Jemez Rd/NM501 to the “back gate” at NM-4, where participants will turn around and return to the starting point at Canyon Rd. For more information regarding this event, contact Brendan Tuning at 505-695-3479.

White Rock Branch Library Parking Lot Closure July 26

The Community Services Department will be celebrating the 10th Anniversary of the White Rock Branch Library with a Street Fair on July 26 from 9 a.m. to noon. The interior portion of the Library parking lot will be closed for booths and vendors. For more information regarding this event, contact Gwen Kalavaza, Library Manager, at 505-662-8264.

2025 Los Alamos County Summer Concert Series

The Summer Concert Series, held every Friday until September 5, is held at Ashley Pond Park in downtown Los Alamos. Each Friday, 20th St. from Trinity Drive to Deacon Street will be closed in the afternoon until following the concert. The Los Alamos downtown area will experience a significant increase in vehicle, shuttle, bicycle, and pedestrian traffic, especially around Ashley Pond Park. Motorists are urged to slow down and watch for others. For questions regarding the Concert Series, contact the Community Services Department at 505-662-8170.