US Route 377 is a highway originating in central Oklahoma, that heads south to the Fort Worth area, where it bends southwesterly all the way to Del Rio, Texas, on the Rio Grande. It manages to cut a northeast-southwest diagonal across the whole of Texas, while also poking northward from Fort Worth to central Oklahoma.  The northern end of US Route 377 is at Interstate 44 about forty miles northeast of Oklahoma City, near a little town called Stroud.  US Route 377 sets out toward the south, paralleling US Route 177 to the east while in the state of Oklahoma.  The highway serves Seminole, Ada, and Tishomingo, before crossing the Red River into Texas.  US Route 377 continues south through Denton to Fort Worth, where US Route 377 begins a new chapter as a diagonal, southwesterly route.  It traces a somewhat jagged path across central and southwestern Texas, serving Stephenville, Comanche, Brownwood, Brady, Mason, Junction, and Rocksprings before ending at Business US Route 90 in Del Rio, Texas.

My photo of US Route 377 comes from the central intersection of Prague, Oklahoma, where US Route 377 crosses US Route 62. This photo shows guide markers for those on US Route 62 westbound, encountering the crossing with US Route 377 (which is concurrent with Oklahoma Route 99 at this point).  This photo was taken in October 2024 during the Southwest trip to New Mexico, Texas, and Oklahoma.

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