Tri State Marker
See the westbound or the eastbound Route 66 descriptions.
| Built in | 1938 |
| Status | Open |
| GPS | 36.998448,-94.617906 |
| Location | 6 miles east of Baxter Springs |
| County | Cherokee |
| State | Kansas |
The Tri State Marker marks te point where Kansas, Missuri and Oklahoma meet. It is located on US 166 east from Baxter Springs, then south at the state line.
Take care not to follow US-166 beyond the state line as it'll force you onto I-44.