Two women in separate cars, caught in a backup on Interstate 25 after a traffic accident, went into labor Sunday night.
Police spokeswoman Raquel Lopez said a four vehicle crash that left one car upside down closed southbound I-25 at 20th Street Sunday night.
The two women were in vehicles caught in the backup and were not involved in the original accident.
Both women were transported by ambulances from the traffic jam.
Details on their conditions were not available.