Commuters Urged To Plan Ahead; Practice Patience As Road Work Continues On East Jemez Road And NM 502

NNSA News:

Improvements to East Jemez Road and N.M. 502 leading to and from Los Alamos will continue with traffic configurations changing often.

Construction activities on roadways leading to and from Los Alamos County have tested the patience of drivers traveling on the impacted roads with reports of dangerous maneuvers by drivers such as driving above posted speed limits and driving in the wrong direction to avoid traffic control barriers. Other violations and near misses have also been reported. Worker safety as well as that of drivers is of utmost importance.

Travelers are urged to obey traffic instructions and take into account traffic delays as they plan trips to and from the County.

Construction activities and traffic patterns to accommodate the work will include the following:

  • Work on East Jemez Road: Starting today, work resumes on East Jemez Road. The work requires full lane closures. Full traffic control measures are be in effect to support work on East Jemez Road, which is planned to be completed in approximately one week. A pilot car will escort traffic through the construction zone during the hours of approximately 8 a.m. until 4 p.m. Please comply with signage, flagging personnel, pilot car instructions, and other traffic control measures.  
  • Work on N.M. 502. Starting Thursday, Aug. 2 and lasting for approximately two weeks, full depth reconstruction work will move further east (downhill) on NM 502 (shown in red on map). During the morning hours westbound traffic on N.M. 502 leading to Los Alamos County will be two lanes while eastbound traffic will be one lane. During the afternoon commute westbound traffic on N.M. 502 will be reduced to one lane. Traffic from Main Hill road continuing on to eastbound N.M. 502 will be diverted to one of the opposite normally westbound travel lanes to maintain traffic flow going east. This off-set additional lane incorporates a pattern employed previously which proved to be a viable way to accommodate peak commute times. Signs and traffic control barriers will be in place to guide drivers through the work zone. Both eastbound lanes will merge together near the Totavi Gas Station.
  • Work on N.M. 4. The N.M. 4 single-lane hairpin on-ramp at the Y interchange (shown in blue on map) that takes drivers north onto Main Hill/NM502 will be closed 2 p.m. – 9 p.m., Monday-Friday through Aug. 15. Drivers must seek alternative routes during this time.

Law enforcement is supporting these construction activities to ensure safety. Please be patient, courteous and safe.

Drivers are cautioned to also be aware of an unrelated NMDOT construction activity taking place on N.M. 502 at the Otowi Bridge over the Rio Grande River. Go to for additional information related to this work. First click on the icon for road work over the Rio Grande on N.M. 502, then click the on button.