Highway 100, the exit from Hwy. 77 to South Padre. Hwy. 100 all the way to South Padre.
Once you exit off Hwy. 77 onto 100 you have about 25 miles of county, sheriff, and city police waiting for the weary traveler. Watch the quick sign changes as you near Los Fresnos. Drops from 60 to 45 to 30 pretty quick. Cruise through Los Fresnos. They love Spring Breakers. A favorite spot for the Highway Patrol during that time as well. Port Isabel, just before the causeway to South Padre, is well known for a strict 30 MPH limit. And of course South Padre is no exception, with the radar guns blasting the whole time.
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