Route
NH 129A runs 198 km from Dimapur, Nagaland to Senapati, Manipur.
Crosses Nagaland and Manipur.
Through Dimapur, Peren and Senapati.
Why it matters
NH 129A is a branch of NH 129. In the national highway numbering used since 2010, a letter after the number marks a spur or link off the main route — this one runs Dimapur to Senapati, and it meets NH 129 along the way.