According to the latest information available online, the boat ramp named Highway 190 crossing is a concrete boat ramp located on the Colorado River in Texas. It is situated at latitude 31.21840477 and longitude -98.56477356. The boat ramp is designed for small to medium-sized boats and is used to launch and retrieve watercraft from the river.

The Highway 190 crossing boat ramp is approximately 20 feet wide, which provides ample space for boats to be launched and retrieved safely. Additionally, the ramp is equipped with a parking area that can accommodate several vehicles and boat trailers.

As for the type of watercraft permitted on the Colorado River, it depends on the specific location and regulations in place. However, in general, the river is suitable for a variety of watercraft, including canoes, kayaks, fishing boats, and recreational motorboats.

Overall, the Highway 190 crossing boat ramp provides convenient access to the Colorado River for boaters in the area. Its ample width and parking area make it a popular spot for launching and retrieving boats, while its location on the river provides ample opportunities for water-based activities.