another highway junction for 21 mi (34 km), where it meets State Roads 464 and 90 three miles (5 km) north of Lordsburg. At Lordsburg, U.S. 70 joins with Interstate 10 eastbound, splitting off in Las Cruces, and becoming Picacho Avenue in Las Cruces. When Picacho Avenue meets Main Street, US 70 follows Main Street northbound. U.S. 70 then crosses Interstate 25, and has been upgraded at this point to a controlled access highway until entering the foothills of the Organ Mountains. As a divided highway, U.S. 70 then crosses the Organ Mountains via San Augustin Pass, descends to the valley floor of the Tularosa Basin, and next crosses the White Sands Missile Range. Overhead missile tests can close the highway for a few hours; this generally happens once or twice a week, and typically only for an hour at a time. The road then passes the entrance to White Sands National Park, and shortly after that passes the southern end of Holloman Air Force Base. It then turns northbound, and picks up a concurrency with U.S. 54 upon entering Alamogordo. On the north end of Alamogordo, US54/US70 intersects the beginning of U.S. Route 82 near La Luz. The concurrency with US 54 lasts until Tularosa, and the highway remains divided until US 70 and US 54 diverge. After splitting off to the northeast, U.S. 70 begins an ascent into the Sacramento Mountains and enters the Lincoln National Forest. The road then runs across the Mescalero Apache Indian Reservation and near the resort town of Ruidoso. In Hondo, it begins another concurrency, this time with U.S. 380. U.S. 70 then bypasses Roswell to the northwest, together with U.S. 285. U.S. 70 then heads off to the northeast, running through Portales and Clovis before entering Texas at Texico. From mile 170.6 to mile 197.25 on US 70 the speed limit is posted at 75 mph (120 km/h) across White Sands Missile Range. (26.6-mile stretch) just slightly longer than a standard marathon. US 70 is one of only two non-interstate roadways in New Mexico to receive a speed limit of 75 miles per hour (U.S. 285 between Roswell and Vaughn is also posted at 75 miles per hour). Texas U.S. 70 enters Texas joins with U.S. 60 and U.S. 84. U.S. 60 splits off to the northeast in Farwell, just over the state line. U.S. 70/84 then angle southeast to Muleshoe, where