Interstate Highway

The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System, is a network of highways in the United States. The Interstate Highway System is a separate system within the larger National Highway System. With very few exceptions, Interstate highways are controlled-access freeways, allowing for safe high-speed driving when traffic permits. They are assigned a special level of funding at the federal level. Despite this federal funding, these highways are owned, designed, built and maintained by the state in which they are located, with the only exception being the federally-owned Woodrow Wilson Bridge on the Capital Beltway (I-95/I-495).

Interstate Oddities

• Vinita, Oklahoma — McDonalds is built over top of Interstate 44. It goes from one side of the interstate to the other, passing over the interstate. Customers can sit inside and eat while traffic drives beneath them. It is also purported to be the "world's largest".
• Kearney, Nebraska — The Great Platte River Road Archway Museum is built over top of Interstate 80. The 1,500 ton structure spans 308 feet across the interstate and houses aIKLJ museum dedicated to frontier culture.
• Reno, Nevada — A Walgreens store sits on top of a segment of Interstate 80 in downtown Reno.
• Newton, Massachusetts — A Star Market supermarket is built over the top of Interstate 90. Traffic reporters refer to this point on the highway as the "Star Market overpass".
• Newton, Massachusetts — A Sheraton hotel is built over the top of Interstate 90.
• Boston, Massachusetts — The Prudential Tower in downtown Boston is built over top of Interstate 90 as well. A less known fact about Interstate 90 is that it is built over what used to be the largest railroad corridor in New England; photos from the 1950s show huge rail yards where I-90 now comes into the city. Many of the oddities on I-90 are the result of deals struck by the Massachusetts Turnpike Authority, Perini Corporation (which constructed the majority of the highway), and existing buildings at the time of construction. In return for not obstructing the highway project, the MTA went to lengths such as preserving the aforementioned Star Market.
• Atlanta, Georgia — The Civic Center MARTA station is located over the Downtown Connector (Interstate 75/85) at West Peachtree Street, making it the only subway station built over an Interstate highway.
• Illinois — The Illinois Tollway oasis is a type of rest area which spans the top of the interstate highway it is on. There are seven of them which are on the Tri-State Tollway (Interstates 80, 94 & 294), Northwest Tollway (Interstate 90) and the Ronald Reagan Memorial Tollway (Interstate 88). Customers are able to sit inside the Oases and eat while traffic goes by beneath them. This type of development is common in the UK.
• Seattle, Washington — The Seattle Freeway Park sits on top of Interstate 5 (NB and SB, including HOV express lanes). The park is connected to the Washington State Convention Center connecting downtown to the Capitol Hill and First Hill districts (locally, First Hill is also known as "Pill Hill" as this is Seattle's medical district). The park is multi-level and as such, there are areas where visitors are able to watch traffic pass by.
• Breezewood, Pennsylvania — There is a sign of a policeman pointing at you saying, "You! Slow Down!" You then have to drive a few blocks on US 30 before returning to I-70. This is a rare instance of a traffic light on an interstate.
• Jersey City, New Jersey — Interstate 78 follows a pair of one-way streets for a short distance between the Newark Bay Extension of the New Jersey Turnpike and the Holland Tunnel, which leads into New York City. Along with the aforementioned I-70, this is the only other primary interstate with traffic lights.