https://www.yahoo.com/news/10-west-near-lordsburg-closed-183814891.html
100% loss of prestressing strands in 3 of the beams. 40 strands per beam.
Apparently the semi was going 75mph at the time of impact.
Looks like they were setting the prestressed concrete beams when 3 spans collapsed. Few details right now.
https://www.cnn.com/2025/02/25/asia/south-korea-highway-collapse-hnk-intl/index.html