Southern Terminus: Texas State Line, continues as US-377

(click on the picture for a larger version) Above: Southbound, just prior to the bridge crossing the Red River. No 'End' sign. Upper right: first southbound assurance sign after crossing the Red River into Texas. Lower right: first northbound assurance sign. US-377 ends in Stroud, and is duplexed with OK-99 for its entire Oklahoma run. OK-99 is the only Oklahoma state highway remaining that stretches from the Kansas border to the Red River.

---

Northern Terminus: Kansas State Line, continues as KS-99

(click on the picture for a larger version) Above: state line, looking south into Oklahoma Upper right: state line, looking north into Kansas Lower right: first northbound assurance sign of KS-99, in Chautauqua. KS-99 continues all the way across the state to the Nebraska state line, where it continues for another 13 miles as their SH-99. Not bad: a single, continuous state highway that lasts for three states!