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London Tower BridgeLondon Tower Bridge
First Moveable First Moveable Bridge Across Bridge Across ThamesThames
18941894 Span - 800 feet Span - 800 feet
Chesapeake Bay Bridge-TunnelChesapeake Bay Bridge-Tunnel Total Length - 17.5 milesTotal Length - 17.5 miles Two Mile-Long TunnelsTwo Mile-Long Tunnels Aircraft Carriers, Tankers, Etc.Aircraft Carriers, Tankers, Etc.
TunnelsTunnelsOrwigsburg (1821) - Auburn, PennOrwigsburg (1821) - Auburn, Penn
450 feet - First In US450 feet - First In USMont Cenis (1871) - France To ItalyMont Cenis (1871) - France To Italy
8.5 miles - First Railroad Tunnel8.5 miles - First Railroad TunnelSimplon (1922) - Switzerland To ItalySimplon (1922) - Switzerland To Italy
12.3 miles - “Most Famous In World”12.3 miles - “Most Famous In World”New York TunnelsNew York Tunnels
Holland (1927), Lincoln (37,45,57)Holland (1927), Lincoln (37,45,57)Channel Tunnel (1993 ?)Channel Tunnel (1993 ?)
21 miles21 miles
DamsDams
TypesTypesGravity, Arch, Butress, EmbankmentGravity, Arch, Butress, EmbankmentCombined TypesCombined Types
Egypt - 4000 BCEgypt - 4000 BCNile River - City of MemphisNile River - City of Memphis
Grand Coulee DamGrand Coulee DamHoover DamHoover DamAswan High DamAswan High Dam
Grand Coulee Dam (1933-42)Grand Coulee Dam (1933-42) Washington Lead States in Hydroelectric PowerWashington Lead States in Hydroelectric Power Gravity Dam - Columbia RiverGravity Dam - Columbia River
550 feet High, 4172 feet Long550 feet High, 4172 feet Long
6.5 Million kW by 19806.5 Million kW by 1980
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