This version utilizes a generalized boundary along the coast, which is sometimes necessary for analysis in which it is important to encompass segments of roadways that travel over water. Roadways on bridges or causeways that span intracoastal waterways are not covered by detailed polygons that precisely follow the coastline, therefore a generalized boundary is needed for some types of analysis where it is important to preserve such relationships.

This dataset was derived from TxDOT's county boundary layer.

Date valid as of: February 2015

Publish Date: Fenruary 2015

Update Frequency: Static