chances are you crossed a bridge today
went through a tunnel or skip the stairs
for the escalator maybe you took the
subway or passed by one of the great
monuments to American history feats of
engineering are all around us and an
American experience we're putting them
on the map so to speak once again we are
setting out to map America this time we
are exploring the major building
projects that have transformed cities
and towns across the country and in turn
have transformed the way we live and
work did you know that before 1910
people shuttled on and off Manhattan on
ferries today millions of people pour
into the city through underground
tunnels to Penn Station and Grand
Central
and speaking of Penn Station did you
know this used to look like this
imagine San Francisco without the Golden
Gate Bridge Washington DC without the
Washington Monument or the US Capitol
building or the Colorado River before
the Hoover Dam how did all these
structures get built explore the world
around you with the engineering map of
America dig into the history of your
hometown or crisscross America from
Oregon to Georgia Michigan to Louisiana
with the online map or take it with you
on your next vacation or your walk
around town the American experience app
lets you enjoy the view now and then
explore old and new photos short videos
tell the story of construction
challenges and triumphs behind the great
feats of engineering partners across the
country are helping to tell the story of
America's engineering history but we
want your help - how has Engineering
transformed your city what's the most
iconic building in your town did a dam
bring hydroelectric power to your region
or is a new bridge changing traffic
patterns upload your photos or videos
and help us map America log on or
download the app now