50 mph. As of May 2010, Fort Bragg military two-lane roadways are now posted at 55 mph instead of 50 mph. Prior to May 2010, the speed limits higher than 50 mph through military bases were only on N.C. Highway 690 along the north side of Fort Bragg, Murchison Road (also known as N.C. Highway 210) and the All American Freeway (which is classified and numbered as a state-maintained Secondary Road even though it is a freeway). The state park speed limit is 25 mph unless otherwise posted. These are not limited to places such as Hanging Rock State Park and Mount Mitchell State Park. The Blue Ridge Parkway is 45 mph. However, there are occasional 35 mph stretches. The National Park Service is responsible for highway maintenance and speed enforcement on the Parkway. The county governments of North Carolina do not have any control over speed limits or any other aspect of road operation, as there are no county roads in the state. Municipalities, on the other hand, can set speed limits on city-controlled roadways, subject to applicable state laws. Freeways and expressways with no primary route number are part of the Secondary Road system and bear route numbers of 1000 or greater. Their maximum posted speed limit is 55 mph with four exceptions. 70 mph speed limits A speed limit of is relatively common on Interstates and non-Interstate freeways in much of rural North Carolina, especially in the eastern portion of the state. 70 mph speed limits are also relatively common on rural freeways in central North Carolina, but rare in the mountainous western region. The following are the highways that currently hold a 70 mph speed limit: Interstate 40 from Old Fort to Morganton, from Statesville to Clemmons, and from Clayton to Wilmington Interstate 73/74 south of Asheboro to Ellerbe. Interstate 77 north of Statesville to the Virginia state line, and on the I-77 express lanes from the intersection with I-85 in Charlotte to Mooresville. Interstate 85 from Mile Marker 70 south of Salisbury to Mile Marker 130 east of Greensboro. and from Gorman (near Durham) to the Virginia state line. Interstate 95 from the SC state line to Exit 10 (Chicken Road), along the Fayetteville Bypass and north of Kenly to the Virginia state line. Interstate 140 for the entire length. Interstate 485 for the entire length. Interstate 540 for the entire length. Interstate 795 for