"The former Illinois State Police Office in Pontiac, Illinois, United States served as the Illinois State Police District 6 headquarters from its construction in 1941 until 2003. The building, located along old U.S. Route 66, was listed on the U.S. National Register of Historic Places in 2007.
The Illinois State Police Office south of Pontiac, Illinois along U.S. Route 66 was constructed in 1941 as the headquarters for the Illinois State Police District 6. The building was one of the first headquarters buildings to be built during the era.
The new headquarters building was constructed and traffic along Route 66 continued to increase throughout the 1940s. In 1944 the route was widened to four lanes through this region of Illinois and two additional highway lanes were constructed directly in front of the building. When Interstate 55 was built about a half mile (800 m) to the west of the route during the 1970s traffic on 66 began to descrease. The Illinois State Police remained headquartered in the Pontiac U.S. Route 66 building until 2003. The building was vacated when a new facility was constructed in Pontiac, the old structure had become expensive to maintain and subject to repeated flooding issues. The building is vacant as of 2003.
The Pontiac State Police Office is cast in the Art Moderne style, reflecting the sleek, streamlined look of new automobiles during the era. The streamline effect is reflected through the structure's use of curved corners, smooth surfaces and structural glass bricks. The building's interior contains a large squad room, used for meetings, office space, a public lobby and a garage bay for cars and motorcycles.
The one-story building has two main wings. The north wing was originally the administrative area and the south wing a garage. The building's layout has been referred to as "pistol-shaped." The same design was used by the Illinois State Police in the construction of the headquarters building at Rock Island" - Wikipedia