Park Road 100 (PR 100) is a park road in the Rio Grande Valley in Cameron County, in the U.S. state of Texas. It runs along South Padre Island through the town of the same name.

Quick Facts PR 100, Route information ...

PR 100
Ocean Boulevard
PR 100 highlighted in red
Route information
Maintained by TxDOT
Length	13.918 mi[1] (22.399 km)
Existed	February 29, 1968–present
Major junctions
South end	SH 100 at the Queen Isabella Causeway in Port Isabel
North end	Padre Island National Seashore
Location
Country	United States
State	Texas
Counties	Cameron
Highway system
Highways in Texas Interstate US State Toll Loops Spurs FM/RM Park Rec
← SH 99 → SH 101

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PR 100 begins at the Queen Isabella Causeway in Port Isabel, and continues west as State Highway 100. A 2.37-mile bridge crosses Laguna Madre, the only road connecting South Padre Island to the mainland. It then enters the town of South Padre Island and intersects itself near the Schlitterbahn 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 before running only a few feet east of the former. It ends shortly after entering the Padre Island National Seashore.

The entire road is in Cameron County.

More information Location, mi ...

Location	mi[2]	km	Destinations	Notes
Port Isabel	0.0	0.0	SH 100 west – Brownsville, Harlingen
Laguna Madre	2.3	3.7	Queen Isabella Causeway
South Padre Island	2.7	4.3	PR 100 south	Spur serving southernmost portion of island
Padre Island National Seashore	13.9	22.4	Road dead ends
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

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