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State highways are of varying standards, capacity, and quality. Some state highways become so heavily traveled they may get upgraded to Interstate Highway standards. Others are more lightly traveled and have low capacity. Many state highway markers are designed to suggest the geographic shape of the state or some other state symbol such as its ...
Some signs can be localized, such as No Parking, and some are found only in state and local jurisdictions, as they are based on state or local laws, such as New York City's "Don't Block the Box" signs. These signs are in the R series of signs in the MUTCD and typically in the R series in most state supplements or state MUTCDs.
Example of an original U.S. Route shield, with the state name of "Michigan" and route number of "27" displayed in the original block font. The original design of the shield was presented in the January 1927 edition of the Manual and Specifications for the Manufacture, Display, and Erection of U.S. Standard Road Markers and Signs, the precursor to the Manual on Uniform Traffic Control Devices ...
The shields for Interstate highways (left) and U.S. routes (right) can be seen on this set of reassurance markers in Southwest Virginia indicating two sets of wrong-way concurrencies. A highway shield or route marker is a sign denoting the route number of a highway, usually in the form of a symbolic shape with the route number enclosed. As the ...
Expansion of the U.S. Highway System continued until 1956, when the Interstate Highway System was laid out and began construction under the administration of President Dwight D. Eisenhower. After the national implementation of the Interstate Highway System, many U.S. Routes that had been bypassed or overlaid with Interstate Highways were ...
An Interstate Highway under construction , with both directions of traffic moved to one side of the roadway I-94 in Michigan, showing examples of non-interchange overpass signage in median, upcoming exit signage on right shoulder, a pre-1960 overpass with height restriction signage, newly installed cable median barrier, and parallel grooved ...
Kentucky signs the western end of US 42 at US 31E/US 60, just west of I-65 US 43: 410: 660 US 31, US 45, US 90 in Mobile, AL: US 31 in Columbia, TN: 1934: current Alabama signs the southern end at US 90 north of downtown Mobile US 44: 238: 383 US 209/NY 55 northeast of Ellenville, NY: SR 3A in Plymouth, MA: 1926: current US 45: 1,297 [i]
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]