Florida State Road 4

State Road 4 is a two-lane Florida State Road in Okaloosa, Santa Rosa, and Escambia counties. It is signed east–west, but the road is slightly diagonal. It is about 45 miles (72 kilometers) long, from Century near the Alabama state border at an intersection with U.S. Route 29, to the farming community of Milligan at an intersection with U.S. Route 90. This intersection with U.S. Route 90 is due to be redone in 2015. It cuts through the Blackwater River State Forest. It crosses Penny Creek, Blackwater River, Beaver Creek, Cedar Creek, East Fork Big Coldwater Creek, Manning Creek, Juniper Creek, West Fork Big Coldwater Creek, and the Escambia River, all part of the Blackwater River basin, except for the Escambia River.