Kingman to Hoover Dam (milepost 2 to 17)
In November 2010, ADOT completed construction on the final 15 miles of roadway south of the Hoover Dam, providing motorists with a continuous four-lane divided highway on Interstate 40 between Kingman and the new Hoover Dam Bridge.
Project construction included widening an existing 15-mile roadway section, and providing significant highway improvements. The $71.3 million lane widening project includes a new trailhead at milepost 4.1, and a new scenic overlook at milepost 13.5. The existing overlook (milepost 12.7) has also been upgraded. Three wildlife crossings over US 93 were constructed at mileposts 3.3, 5.2, and 12.2 to protect motorists and provide a safe crossing for the Desert Bighorn Sheep, native to the Black Mountains.
The first segment on South US 93, spanning 36 miles between Wikieup and Santa Maria was completed in February 2008. This section of the highway was divided into 9 different projects. It included widening the highway to four lanes and building two bridges one at Burro Creek and the other at the Santa Maria River.
Southbound Wagon Bow Ranch and Southbound Deluge Wash
Construction to widen and improve a seven-mile segment of US 93 north of Wikieup (milepost 109 to 116.3) was completed in July 2012. The $26 million project provides motorists with new southbound lanes and another completed section of four-lane divided highway.
Wikieup to Interstate 40
ADOT has completed 4 widening projects between Wikieup and I-40. Construction on the Southbound Ranch Road project, located 17 miles north of Wikieup (milepost 104 to 106), was completed in late 2009. The $5.8 million lane widening project, funded by the American Recovery and Reinvestment Act, provides two additional miles of four-lane divided highway.
Construction on US 93 at McGarry’s Wash, located just south of the I-40/US 93 traffic interchange (milepost 91.7 to 95.2), was completed in October 2008. The $9.8 million project consisted of constructing a parallel roadway to create a four-lane divided highway.
Old US 93 to Antelope Wash
The $20 million four lane widening project from old US 93 to Antelope Wash (milepost 91.4 to 101.9) was completed in January 2007.
Construction north of Wikieup near Tompkins Canyon (mile post 119.5 to 121.2) consisted of parallel roadway to create a four-lane divided highway. The $10.6 million project was completed in November 2008.
US 93 Wickenburg Bypass
In February 2010, ADOT completed the Wickenburg Interim Bypass which has relieved the congestion at the intersection of US 93 and US 60 in downtown Wickenburg. The $30 million project included constructing a four-lane divided highway, two roundabouts and a new bridge.