Park Road 100 (PR 100) is a park road in the

Rio Grande Valley The Lower Rio Grande Valley ( es, Valle del Río Grande), commonly known as the Rio Grande Valley or locally as the Valley or RGV, is a region spanning the border of Texas and Mexico located in a floodplain of the Rio Grande near its mouth. Th ...

in Cameron County, in the U.S. state of

Texas Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...

. It runs along

South Padre Island South Padre Island is a barrier island in the U.S. state of Texas. The remote landform is located in Cameron County, Willacy County, and accessible by the Queen Isabella Causeway. South Padre Island was formed when the creation of the Port Man ...

through the town of the same name.

Route description

PR 100 begins at the

Queen Isabella Causeway Queen Isabella Memorial Bridge was developed as a concrete pier-and-beam bridge with a steel cantilever main beam span. The memorial bridge has a travel distance of and sustains the continuation of Texas Park Road 100. The watercourse thoroughfar ...

Port Isabel Port Isabel may refer to: Places *Port Isabel, Texas, USA; a city in Cameron County *Port Isabel, Sonora, Mexico; a former port (1864-1879) at the mouth of the Colorado River * Port Isabel Independent School District, Cameron County, Texas, USA *Po ...

, and continues west as State Highway 100. A 2.37-mile bridge crosses

Laguna Madre The Laguna Madre is a long, shallow, hypersaline lagoon along the western coast of the Gulf of Mexico in Nueces, Kenedy, Kleberg, Willacy and Cameron Counties in Texas, United States. It is one of seven major estuaries along the Gulf Coast ...

, the only road connecting

to the mainland. It then enters the town of

and intersects itself near the

Schlitterbahn Schlitterbahn is an American brand of water parks and resorts owned by Cedar Fair. It was previously a company family-owned-and-operated by the Henry family that was based in New Braunfels, Texas. Schlitterbahn opened its first location, Schlitt ...

water park and resort. The section of the road south of this intersection acts as a spur for the southernmost part of the island. It continues north through the island/city, passing many resorts, bars and restaurants. Just north of Edwin King Atwood Park, it runs for about half a mile between the Laguna Madre and the

Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United ...

before running only a few feet east of the former. It ends shortly after entering the

Padre Island National Seashore Padre Island National Seashore (PINS) is a national seashore located on Padre Island off the coast of South Texas. In contrast to South Padre Island, known for its beaches and vacationing college students, PINS is located on North Padre Isla ...

Junction list

References

{{reflist 0100 Transportation in Cameron County, Texas 1968 establishments in Texas