| 1940 – present|
SH 77 in Naples
| US 259 in Rocky Branch|
State Highway 338, abbreviated SH 338, is a 6.722-mile (10.818 km) state highway in the U.S. state of Texas. The highway begins at a junction with U.S. Highway 259 (US 259) in Rocky Branch and heads north to a junction with State Highway 77 (SH 77) in Naples.
Texas State Highway 338 Wikipedia
SH 338 was designated in 1940 to serve as a route between Rocky Branch and Naples.
SH 338 begins at a junction with US 259 in Rocky Branch. It heads north from this junction to an intersection with FM 161. SH 338 reaches its northern terminus at SH 77 in Naples.
The entire route is in Morris County.