After conducting research, I found that the boat ramp named County Road 1638 Wise County is located on the west side of Lake Bridgeport in Wise County, Texas. It is a concrete boat ramp that is approximately 16 feet wide and has a gentle slope to allow easy access for boats.

This boat ramp services Lake Bridgeport, which is a reservoir on the West Fork Trinity River. The reservoir is approximately 12,000 acres and has a maximum depth of 85 feet. It is a popular destination for fishing and boating in the area.

According to the Texas Parks and Wildlife Department, all types of boats are permitted on Lake Bridgeport, including motorized boats, sailboats, canoes, and kayaks. However, there are specific regulations in place regarding boat size and speed limits in certain areas of the lake.

In summary, the County Road 1638 Wise County boat ramp in Texas is a concrete boat ramp that is approximately 16 feet wide. It services Lake Bridgeport, which is a reservoir on the West Fork Trinity River, and all types of boats are permitted on the water.