The section of the highway from SH 286 east to Corpus Christi Naval Air Station was originally designated as FM 693 on June 4, 1946.It continues to the south and begins to turn to the southeast just prior to a junction with FM 665 (Old Brownsville Road).The freeway continues to the southeast through the city to a junction with SH 357 (Rodd Field Road) just prior to Oso Bay.After crossing the bridge over Oso Bay, the freeway heads southeast to an interchange with PR 22.PR 22 continues to the southeast over the John F. Kennedy Memorial Causeway to Padre Island as SH 358 curves to the northeast to its eastern terminus at the Corpus Christi Naval Station.