The highway crosses a steep bridge over Chocolate Bayou and passes chemical plants before entering Galveston County.

The route begins a brief concurrency with FM 1764 in La Marque just prior to a junction with I-45.

The road was extended to SH 288 in Brazoria County on October 8, 1964, replacing most of FM 1561, which was cancelled.

[8] The designation of that section reverted to FM 2004 with the elimination of the Urban Road system on November 15, 2018.

Media related to Farm to Market Road 2004 at Wikimedia Commons