Based on the latest information available, the I-90 Mineral County boat ramp in Montana is a concrete boat ramp that is approximately 20 feet wide. It provides access to the Clark Fork River, which is a popular spot for fishing, boating, and other water-based recreational activities.

According to the Montana Fish, Wildlife & Parks website, the Clark Fork River is open to motorized and non-motorized watercraft, including boats and kayaks. However, there are certain restrictions on the use of motorized watercraft, depending on the section of the river, to protect wildlife and habitat.

Overall, the I-90 Mineral County boat ramp appears to be a well-maintained and accessible facility that provides boaters with easy access to a scenic and popular waterway in Montana.