Cone Zone: Week Of Aug. 9, 2021


The projects listed in this section are being managed by Los Alamos County Public Works staff through contractors.

For more information, email, call 505.662.8150, or visit the “Projects/Public Works” link at

Please slow down and use caution within the construction work zones.

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

The highway detour has been shifted to the north side of N.M. 502 allowing the contractor to work on the south side of the road installing precast concrete boxes and retaining walls.

Due to the amount of construction activity that includes trenching, excavation and utility relocation near the trailhead, the trailhead parking lot and a 100 foot section of the trail near the trailhead will be closed for safety. AUI will be hauling excess material from the project site to a site off DP Road. Motorists, bicyclists and pedestrians are advised to stay alert for construction personnel and equipment and use caution traveling through the work zone.

North Mesa Roadway and Utilities Improvement Project (Casa de Oro)

TLC Plumbing and Utility continue road and utility improvements on Alamo Road, Capulin Road, Tsankawi Street, Oro Court, Tsankawi Court, Cedro Court and Big Rock Loop South. Utility work will continue on Alamo, Capulin and Tsankawi including new water and gas main lines. New water service cans and gas service lines to homes will continue to be installed along Capulin and Alamos. Work hours are 7 a.m. to 5 p.m. Monday through Friday, weather permitting.

Traffic signs and devices will shift vehicular, bicycle and pedestrian traffic around work zones.

Access to residents as well as services such as mail delivery, emergency services, school bus routes, trash and recycling collection will be maintained. Motorists, bicyclists, and pedestrians are advised to be alert for construction personnel and equipment and use caution traveling through the work zone.

Canyon Rim Walking Trail

GME Emulsion, LLC will begin trail rehabilitation on Canyon Rim Walking Trail from Knecht Street to the trail termini at the parking lot under construction with the underpass. The first section is between Knecht Street and DP Road and the section is DP Road to the trail termini. These sections of the trail will be closed during repairs, which include mill and overlay, crack sealing and fog seal.

No street closure will occur during the construction.

Work commenced Tuesday, July 27 and is scheduled for two weeks. Work hours are 7 a.m. to 5 p.m. Monday through Saturday, weather permitting.

Leisure Lagoon (addition to the Aquatic Center)

The bike lane along Canyon Road adjacent to the construction area remains closed pending repaving.  Bicyclists are encouraged to ride in the driving lane as the material in the bike lane is soft. The sidewalk is open from the Nature Center to the back drive of the Aquatic Center. From there, pedestrians can walk in the bike lane area between the traffic control devices and construction fence.

The public is also reminded that the “back driveway” to the Aquatic Center is closed to the public during construction. Please do not use this area to access the trail. Please use the trail entrance at the Nature Center.

Traffic & Streets Division Projects:

The projects listed in this section are being managed by County Traffic & Streets Division staff. Please slow down and use caution within the construction work zones.

Grand Canyon and Aragon Avenue Intersection Asphalt Repairs Crews will be patching asphalt at the intersection of Grand Canyon and Aragon Avenue, starting at 7:30 a.m. Monday and Tuesday and ending  by 3:30 p.m. daily. There will be a flagging operation in place.

Canyon Glen – Bridge Work

Crews will be doing bridge repair work at Canyon Glen. Work will get underway Wednesday and continue through Friday. Crews will start work at 7:30 a.m. and end by 3:30 daily. There will be a flagging operation in place.

County-Wide Roadway Striping Continues

Crews will continue striping roads Monday morning and working through various parts of the County until complete. They begin at 7:30 a.m. and end by 3:30 p.m. each day.

Non-County Projects:

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.

Rockfall Mitigation project to begin on N.M. 502

The New Mexico Department of Transportation (NMDOT) along with GeoStabilization International (GSI) will begin a rockfall mitigation project Monday Aug. 9, in the Los Alamos area.

Due to its composition, the existing hillside is subject to rockfalls during rain and snow events which can pose a danger to passing motorists. The project will remove any rocks that are deemed a threat to motorists, under controlled conditions. The project is expected to take 10 working days to complete, weather permitting.

Work will take place 9 a.m. to 3 p.m., Monday through Friday and  8 a.m. to 5 p.m. Saturdays. Due to the nature of the work, N.M. 502 will be closed along a 2-mile stretch – from one mile east of Airport Road in Los Alamos to the junction with N.M. 4 (mile marker 4 to mile marker 6) during working hours. All traffic into and out of Los Alamos will be routed onto the truck route during this time.

Motorists are advised to use caution, obey posted speed limits, expect delays and plan accordingly.

Los Alamos Canyon Bridge Repairs (LANL):

  • The bike path reopens evenings and weekends.
  • Traffic remains detoured to the bridge’s east side with one lane in each direction
  • The speed limit is 15 mph.

To avoid congestion and delays, consider using Atomic City Transit as a bus option to cross the bridge. Check out the Route 1 (downtown circulator bus) schedule here.

Motorists are reminded to slow down in the construction area; the speed limit is 15 mph. Allow extra time for your commute during peak travel times in the morning and evening.

DP Road (Work related to Canyon Walk Apts and The Bluffs – Bethel Development) Qualcon Builders, LLC – 120 DP Road Utility Infrastructure Replacement and Roadway Reconstruction

Roadway reconstruction activities will continue with construction of the remaining sections’ curb & gutter, sidewalks and driveways. These activities will impact DP Road from Trinity Drive to Fire Station #2 with segments of 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 7 a.m. to 7 p.m. daily.

The contractor work in DP Road is related to the new Canyon Walk Apartments (under construction) and The Bluffs senior housing (soon to be constructed). The roadway reconstruction includes installation of curb and gutter, sidewalks and paving of the roadway. All construction activities related to the reconstruction of DP Road will continue during the month of August.