Most of US 93 from Hoover Dam to Kingman was originally designated as State Route 69 (SR 69) and was later re-designated as the easternmost part of US 466 in 1935.

As it continues to the northwest through this scenic but remote rural area, the highway is known as the Joshua Forest Parkway of Arizona.

The highway widens to four lanes at the Santa Maria River and continues towards the northwest past a junction with SR 97 on its way to the town of Wikieup.

Before reaching that town, it passes the tiny settlement of Nothing (just across the Yavapai – Mohave county line) and crosses Burro Creek over dual steel arch bridges, which are located about 400 feet (120 metres) above the intermittent waterway.

After passing through Wikieup, US 93 curves north to follow the western edge of the Big Sandy River and one of its tributaries, Knight Creek, on its way toward Interstate 40 (I-40).

A project is currently underway to design and build a free-flowing connection between I-40 and US 93 in the western section of Kingman, to avoid the current diamond interchange (exit 48) at Beale Street and the approximately one-mile section of congested, undivided roadway that US 93 motorists must navigate before the road widens back into a four-lane divided facility.

Highway 68 heads west over the Black Mountains to Davis Dam, Laughlin, and Bullhead City (the latter via SR 95), while US 93 continues as a four-lane divided route towards the northwest.

As it nears the Nevada state line, it enters the Lake Mead National Recreation Area and climbs over Householder Pass, before crossing into Nevada via the Mike O'Callaghan–Pat Tillman Memorial Bridge over the Black Canyon just downstream of the Colorado River from Hoover Dam.

[2][3] The route between Kingman and Hoover Dam first became part of the state highway system on June 18, 1934, when it was designated as SR 69.

[8][9] US 466 was joined by US 93 on June 17, 1935, after AASHO approved an extension of the latter route from US 91 north of Las Vegas, Nevada to Kingman.

[12][7] Though the state wanted US 93 to be extended over all of SR 93 through Phoenix, Casa Grande and Tucson to the Mexico border in Nogales, a southern extension was only accepted by the AASHTO to US 89 north of Wickenburg in 1965.

Also, in the wake of the September 11, 2001 attacks, truck traffic over the Hoover Dam had been diverted south to a river crossing near Laughlin, Nevada via State Route 68, State Route 163 in Nevada and US 95, to safeguard the dam from hazardous spills or explosions.

There is currently no open road for motorists to leave the Arizona side of the Dam, whilst remaining in the state.

[2] Originally a small section of US 66, it became part of the Kingman I-40 Business Loop (I-40 BL) on October 26, 1984, upon the decommissioning of the former highway in Arizona.

[19] The majority of I-40 BL was retired to the city of Kingman in 2002, with two sections, each less than a mile long, remaining under ADOT ownership at I-40 exits 48 and 53 respectively.

The two remaining segments owned by ADOT became a minor southwestern extension of SR 66 and a new route designated US 93 Spur.