- An average of 1,274 groups participate in Iowa's Adopt-A-Highway program each year.
- These groups help keep approximately 32 percent of the state's roadways litter-free. (FY 2014)
- In FY 2014, volunteers collected approximately 248 cubic yards of litter, and state workers collected an additional 2,063 cubic yards from the state's highways.
- Iowa DOT employees spent 1,409 hours disposing of trash picked up by Adopt-A-Highway volunteers and an additional 29,695 hours picking up litter from the roadways. (FY 2014)