For anyone required to or wanting to do their immigration business at the new Mahasarakham Immigration office, it is located on Hwy 23, 5 km south of the Hwy 219/Hwy 23 intersection. It is located on the north side of the divided highway and just south of the PEA (Provincial Electric Authority) building. There is also a u-turn located within 100 meters of the entrance. GPS coordinates are: N16.137914, E103.247840. The entrance road to the property is easily missed, so drive slowly. There appears to be a single small 2 level structure about 200 meters in. I was told the site was (and may still be) used as a firing range training facility for various police departments, though I couldn't see any facility for that purpose. A known good telephone number for this office is 043 971 278, but have a Thai speaking person make the call and take any information with a grain of salt. TIT after all.