Kumamoto 42 map courtesy of Google Earth
| Length |
| 16.7 km |
| Route name |
| Yatsushiro Kagami line |
| Southern terminus |
| Yatsushiro-shi, Route 3 (near Yatsushiro-minami I.C) |
| Northern terminus |
| Yatsushiro-shi, route 14 (Kagamimachi Kagami intersection, opposite route 156) |
| Municipalities traversed (S to N) |
 Yatsushiro-shi |
| Points of interest |
 Yatsushiro-jo Ato-koen  Matsuhamaken Historic Landmark |
| Road intersections |
| Route 3 route 338 route 250 (130 m duplex) route 336 (570 m duplex) route 251 route 245 route 322 route 14 (opposite route 156) |
| Train line intersections |
| Notes |
| Commissioned 28 October 1982 |