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The Inter-American Highway (IAH) is the Central American section of the Pan-American Highway and spans 5,470 kilometers (3,400 mi) between Nuevo Laredo, Mexico, and Panama City, Panama. History [ edit ]
In Costa Rica, the Pan-American Highway is known as Carretera Interamericana (Inter-American Highway) and is composed of two segments Carretera Interamericana Norte (Route 1) and Carretera Interamericana Sur (Route 2). It passes through Liberia, San José, Cartago, Pérez Zeledón, Palmares, Neily, before crossing into Panama at Paso Canoas.
There are four primary interstate highways and eight auxiliary highways, with a ninth proposed, totaling 1,497.58 miles (2,410.12 km) interstate miles in Florida. The longest interstate is I-75, extending 470.678 miles (757.483 km), and the shortest is I-395, extending just 1.292 miles (2.079 km).
The earliest evidence found of the old state road system is on a 1917 State Road Department map; [1] in 1923 the Florida State Legislature began writing the routes into law. Every two years, when the legislature met, new roads were added, at first by number, and later giving the SRD the ability to choose a number.
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The Pershing Map FDR's hand-drawn map from 1938. The United States government's efforts to construct a national network of highways began on an ad hoc basis with the passage of the Federal Aid Road Act of 1916, which provided $75 million over a five-year period for matching funds to the states for the construction and improvement of highways. [8]
Later, he personally directed the creation of the Alaskan Highway, and helped the countries of Central America in building the Inter-American Highway. "[He] was a force as powerful as his counterpart at the FBI, J. Edgar Hoover ," insists historian Stephen B. Goddard, "yet was virtually unknown to most Americans."
Project 1956–present $425 billion 2006 $425 billion $642 billion Interstate Highway System: 1992–2006 $14.6 billion [1] [2] 1982 $8.08 billion $25.5 billion Big Dig, Boston, Massachusetts: 2000–2022 $1.4 billion [3] 2022 I-5 - SR 16 Tacoma/Pierce County HOV Program, Tacoma, Washington (Interstate 5 in Washington) 2002–2013 $6.5 billion [4]