Union County Highway Department
Union County, located in central southern Arkansas, is a vast county spanning 1,039 square miles and bordered by the Ouachita River. Its county seat, El Dorado, is a charming town with a rich history and vibrant southern culture, known for hosting some of the best Arkansas Festivals and having America's Best Downtown in 2009. The county courthouse, a magnificent structure built during the oil boom of the 1920s, stands proudly in the heart of El Dorado, featuring stunning limestone facades, ionic columns, and a beautifully detailed marble atrium.
With a history rooted in cotton plantations and later transformed by the oil industry, Union County has seen significant economic growth. The discovery of oil in 1921 led to a boom that attracted thousands of workers and speculators, propelling El Dorado's population to nearly 30,000. Although the oil industry declined, the county's economy remains strong, supported by thriving oil, chemical, and timber industries. Additionally, the county's lock and dam system, originally built for navigation purposes, now enhances recreational activities such as boating, hunting, and fishing, contributing to the county's natural beauty and appeal.
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