 Transport infrastructure by decade of completion

Transport infrastructure encompasses various modes of transportation, including roads, railways, airports, and ports. The development and completion of transport infrastructure can vary widely across different regions and decades, often influenced by economic, political, and technological factors. Below is a general overview of significant trends and key projects by decade, primarily focusing on major developments in the United States and Europe: ### 19th Century - **1800s-1890s**: - The construction of canals (e.g.