State Route 172

SR 172 east begins at the convergence of I-11/U.S. 93 with the eastern end of U.S. 93 Business (Exit 2). U.S. 93 Business travels westerly to Boulder City as SR 172 turns east toward Hoover Dam.

07/15/18

A 35 mph speed limit is maintained along the entire length of SR 172 as it climbs mountainous terrain.

07/21/17

SR 172 east ends one mile ahead at the base of the security station into the Hoover Dam area.

07/15/18

Eastbound motorists navigate a series of curves as SR 172 begins a decent into Black Canyon.

07/15/18

SR 172 remains 100 feet above I-11/U.S. 93 as the Hoover Dam Bypass curves toward the Mike O' Callaghan-Pat Tillman Memorial Bridge.

07/15/18

State Route 172 begins immediately west of the Hoover Dam security check point.

03/07/19

SR 172 (Hoover Dam Access Road) crosses into Pacific Time ahead of the drive leading to the Lake Mead Lakeview Overlook.

03/07/19

SR 172 west winds upward along a series of S-curves.

03/07/19

State Route 172 concludes ahead at an interchange with Interstate 11/U.S. 93 and U.S. 93 Business.

03/07/19

U.S. 93 Business travels west into Boulder City while I-11/U.S. 93 bypass to the south, rejoining the branch route near Railroad Pass.

03/07/19

Opened fully by August 2018, the Boulder City Bypass leads I-11/U.S. 93 on an arc south of Boulder City, turning northward at Railroad Pass.

03/07/19

While I-11 ends on the Arizona side of the Mike O'Callaghan-Pat Tillman Memorial Bridge, U.S. 93 continues southeast toward Kingman. To the north, I-11 concludes at a systems interchange with I-215/515 near Henderson. I-515 continues northward into Las Vegas.

03/07/19

SR 172 west concludes as Goldstrike Canyon Road continues south to the Goldstrike Canyon/Arizona Hot Spring Trailhead parking area.

03/07/19