Colorado’s “Triumph of Engineering” killed dozens in ways the public never knew

Building America’s Highest Paved Road by Hand

The Mount Blue Sky Scenic Byway began with a bold plan in 1923. Workers faced a flu outbreak before the first shovel hit dirt that July.

Then came the real test. Steam shovels ran at half power in the thin air, while rain, hail, and snow made work nearly impossible. Men turned to hand tools, snuff, and raw grit.

Disease spread through camps, and horses reportedly jumped off cliffs, unable to handle the altitude. The final 600 feet to the 14,130-foot summit were built entirely by hand.

When it opened in 1931, this engineering marvel became North America’s highest paved road.

The story of this extraordinary highway awaits at Mount Blue Sky, where you can drive the very path these determined workers carved by hand.

Surveyors Caught Deadly Flu While Mapping America’s Highest Road

The first survey teams hit the mountain in 1923, working on the tough route from Echo Lake to the peak. They worked above 11,000 feet, where breathing gets hard and weather turns bad fast.

A dangerous flu spread through their camp as they rushed to finish by January 1924.

The surveyors kept going despite strong winds that broke their equipment and problems that would make most people head back down.

Construction Crews Started Climbing in Summer 1923

Work began on July 22, 1923, starting what would become North America’s highest paved road. Denver wanted to grow its mountain parks with a road reaching all the way to the 14,130-foot top.

The city fought with Colorado Springs and its Pikes Peak attractions for tourist money. This big road project was part of the planned Circle G scenic loop linking Bergen Park to Idaho Springs.

Mountain Weather Made Simple Tasks Into Survival Tests

Workers fought “pretty much non-stop” rain, hail, and snow that made using big machines nearly impossible during 1923. The wild mountain storms forced crews to rethink how to build the road.

Even summer brought little help as snow and hail hit without warning at these high spots. Men huddled in tents as temperatures dropped, waiting for short breaks in the weather.

Machines Struggled for Air Just Like the Workers

Steam shovels ran at half speed in the thin air above 12,000 feet, making them very slow. Machines that worked fine lower down simply couldn’t handle the height.

Getting coal and water up the mountain to run these machines created another problem for bosses. When machines failed, human muscle power had to take over, slowing work and making it harder on workers.

Sickness Spread Fast Through Work Camps

Disease ran wild among workers stuck in remote high camps with poor bathroom setups. The same flu that hit the survey team kept hitting construction crews throughout the project.

Getting sick at 13,000 feet, miles from good medical help, turned normal illnesses into life-threatening problems.

Workers pushed through fevers and coughs while living in rough conditions far from their families and doctors.

Horses Chose Death Over Working at 13,000 Feet

Pack animals couldn’t handle the tough conditions, with reports of horses jumping off cliffs to their deaths. The thin air and harsh work proved too much for animals that normally handled mountain jobs fine.

Each lost horse created new problems for moving supplies up the steep route.

Workers watched in horror as their four-legged helpers, unable to show their pain any other way, picked a quick death over more work.

Men Grabbed Shovels When Machines Quit Working

Workers used basic hand tools to get the job done: shovels, hammers, drills, and carefully placed dynamite.

The men chewed through tins of Copenhagen snuff to help cope with the brutal conditions while pushing the work forward inch by inch. Their grit became the project’s most trusted resource as machinery kept breaking down.

Callused hands and sore backs replaced horsepower as the main way to build one of America’s toughest roads.

The Alpine Section Took Lives and Broke Spirits

The stretch between Echo Lake at 10,600 feet and the upper parts proved deadliest to both people and animals. Money costs and lives lost grew as crews pushed into the harsh mountain setting.

Workers carved the narrow road through solid rock and around scary cliffs with no rails for safety. Many quit after working daily next to thousand-foot drops in crazy weather.

Hand-Built Final Stretch Pushed Human Limits

Those last 600 feet to the top needed pure manual labor without any machine help. Crews finally finished this brutal final section in 1930 after seven years of backbreaking work.

Men worked where oxygen is so thin that just breathing takes effort. Every foot of that final stretch stands for countless hours of physical suffering.

Tourists Flocked to America’s Highest Road in 1931

The finished highway opened to excited drivers in June 1931 as the highest car road on the planet. A British newsreel showed the world’s amazement, calling it a “triumph of man’s engineering skill.”

The 28-mile route climbed an amazing 7,000 vertical feet from Echo Lake to the 14,130-foot summit. Visitors loved views once only open to serious mountain climbers as cars puttered up the steep slopes to touch the sky.

The Road Remains a Testament to Human Determination

This engineering marvel still holds the title of North America’s highest paved road at 14,130 feet. The construction methods and worker sacrifices became legendary in Colorado mountain lore.

The project proved that human willpower could overcome seemingly impossible natural barriers.

What once took days of dangerous climbing became accessible to anyone with a car and the courage to drive the narrow, guardrail-free road to the literal top of the Rocky Mountains.

Visiting Mount Blue Sky, Colorado

Mount Blue Sky’s scenic road is currently closed for construction through Memorial Day 2026, so you can only reach the summit by hiking. When it reopens, you’ll need timed-entry reservations through recreation.

gov and pay $5-$15 plus a $2 reservation fee. Take Highway 103 from Idaho Springs, then Highway 5 to the top.

Vehicles over 30 feet can’t use Highway 5. The road reaches 14,130 feet, making it North America’s highest paved road.

This article was created with AI assistance and human editing.

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