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Road Construction Update: Week of October 18, 2021


Public Works Projects: 

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.

Canyon Rim Trail Underpass 
As the project nears completion, motorists may experience intermittent flagging operations on NM502 between the hours of 9 a.m. and 4 p.m. due to miscellaneous construction operations.

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. AUI will be hauling excess material from 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 continues road and utility improvements on Alamo Rd, Capulin Rd, Tsankawi St, Oro Ct, Tsankawi Ct, Cedro Ct, and Big Rock Loop South. Residents will continue receiving landscaping remediation around the newly installed water cans and sidewalks. Grading and paving of portions of Capulin Rd, Alamo Rd, and Tsankawi St will continue next week. Work hours are 7a.m. to 5p.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.

Leisure Lagoon (addition to the Aquatic Ctr.)
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 due to construction. Please do not use this area to access the trail. Please use the trail entrance at the Nature Center to then travel behind the Aquatic 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.

Concrete Work and Asphalt Patching on 39th St and Canyon Rd
Crews will be replacing sidewalks, asphalt, curb and gutter at the intersection of 39th and Canyon.  This construction will require the sidewalk to be closed on the east side of 39th between Gold St. and Canyon most the week. Vehicle traffic won’t be impacted except for Thursday, October 21 when crews repair the asphalt. A flagging operation will be in place for the asphalt repairs. Work will commence daily at 8 a.m. and end by 3:30 p.m.

Entrance Closure for Asphalt Milling and Patching at Hospital Entrance on Diamond Dr
Streets crews will be closing all access points to the Los Alamos Medical Center (hospital), including the turn lane, at the intersection of Diamond Dr near West Rd. Crews will close the section of road from the interior of the hospital entrance toward the Emergency Room entrance to mill and repair asphalt. Citizens and emergency vehicles will need to access the hospital emergency room from the Trinity Dr entrance. The work will be done Friday, October 22. Work will begin at 8 a.m. and end when completed.


Utilities Department Projects: 

The projects listed in this section are being managed by County Dept. of Public Utilities staff. Please slow down and use caution within the construction work zones.

Waterline Replacement on State Rd 4 at E. Jemez Rd
RMCI, under contract with the DPU, will replace a section of 16-inch waterline in the shoulder of NM State Rd 4 at East Jemez Rd (Truck Route) ahead of the New Mexico Dept. of Transportation road rehabilitation project.  Re-setting barrier walls along the shoulder of the northbound lane on NM State Rd 4 at East Jemez Rd.  Crews will excavate, install the new water pipe along the existing fence line and backfill.  No lane closures are planned. Traffic impacts should be minimal.  


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 slowdown in work zones.

Los Alamos Canyon (Omega) Bridge Repairs (LANL):
Crews are installing a gutter on the Omega Bridge to capture and remove rainwater, which will extend the life of the bridge. The crew will work this Saturday, October 16 to compete the work on the gutter. Because of this, the walkway will be closed that day.

The walkway still is closed during normal working hours. Next week, it will be closed periodically during working hours because the crew will pressure wash the concrete.

Improvements to the bridge are nearly complete.

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.

Tunnel Work Under Diamond Drive (LANL):
Work on the tunnel replacement beneath Diamond Drive continues. These improvements will make crossing Diamond Drive safer and keep traffic moving.

 Improvements include removing the old tunnel, adding a new tunnel that will improve crossing underneath the street, accessibility and lighting, and allow for easier cleaning of the tunnel. Once completed, traffic on Diamond will move more efficiently as pedestrians will cross underground.

Diamond Detour Reminders (LANL):
Follow the speed limits, especially on Bikini Atoll, Mercury, and Pajarito roads. Access to Pajarito Road is available via a detour through Bikini Atoll Road. Access to buildings on the west side of Diamond Drive remains the same. On the east side, parking lots can be accessed near Eniwetok. Parking areas near Grable Road also remain open. For access to Utilities and the steam plant, please use Grable Road. TA-03 parking lots aren't affected.

DP Rd (Work related to Canyon Walk Apts and The Bluffs – Bethel Development) Qualcon Builders, LLC – 120 DP Rd Utility Infrastructure Replacement and Roadway Reconstruction
The majority of the roadway construction activities have now been completed. Next week, work will include construction of remaining sidewalk sections, and clean up and grading along the sides of the roadway. These activities will impact DP Rd from Trinity Dr to Fire Station #2 with segments of the roadway periodically restricted to one-lane traffic controlled by a flagger.  One-lane traffic restrictions will occur only during hours of construction potentially from 7 a.m. to 7 p.m. daily.

The contractor work on DP Rd 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 are now expected to be completed by the end of October.