Boulder City in Clark County, Nevada — The American Mountains (Southwest)
Breaking the Bottle Neck
Hoover Dam
Photographed by Sandra Hughes Tidwell, September 9, 2025
1. Breaking the Bottle Neck Marker
Hoover Dam has been a magnet for tourists - and their cars - from the earliest years of its construction.
The Memorial Bridge has reduced the number of vehicles traveling across the dam. This not only improves the visitor experience but also enhances the air quality.
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When U.S. Highway 93 was rerouted, the approaches to the Memorial Bridge were chosen to limit disturbance to historic sites, trails, and significant wildlife habitat.
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Before the Memorial Bridge opened, the two-lane road atop the dam - a historic site with heavy pedestrian usage - was a bottleneck on the main highway connecting Las Vegas and Phoenix.
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As many as 16,000 vehicles traveled across the top of the dam daily before the bridge opened. Two-hour delays were not uncommon.
Topics. This historical marker is listed in these topic lists: Bridges & Viaducts • Parks & Recreational Areas.
Location. 36° 0.909′ N, 114° 44.692′ W. Marker is in Boulder City, Nevada, in Clark County. It is on Hoover Dam Access Road. This marker is located between America's First
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Regionally, this marker is in Nevada’s Colorado River Valley, in the Mojave Desert, and in Greater Las Vegas. It is also in the American Southwest and in the Mountain West. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once New Spain and also Mexicos Alta California.
Other nearby markers. At least 8 other markers are within walking distance of this marker: Discover Hoover Dam (here, next to this marker); Step by Step (here, next to this marker); Design Decisions (here, next to this marker); Worthy of the Neighborhood (here, next to this marker); For the Record (here, next to this marker); Get Good Footing with Anchors & Foundations (a few steps from this marker); Find Solid Ground with Surveys & Tests (within shouting distance of this marker); America's Finest (within shouting distance of this marker). Touch for a list and map of all markers in Boulder City.
Credits. This page was last revised on September 30, 2025. It was originally submitted on September 27, 2025, by Sandra Hughes Tidwell of Killen, Alabama, USA. This page has been viewed 58 times since then and 21 times this year. Photo 1. submitted on September 27, 2025, by Sandra Hughes Tidwell of Killen, Alabama, USA. • Andrew Ruppenstein was the editor who published this page.
