Oklahoma State Capitol Oklahoma State Capitol The Oklahoma State Capitol is the house of government of the U.S. state of Oklahoma. It is the building that houses the Oklahoma Legislature and executive branch offices. It is located along Lincoln Boulevard in Oklahoma City and contains 452,508 square feet of floor area. The present structure includes a dome completed in 2002. Oklahoma's first capital was Guthrie, Oklahoma, but it moved to Oklahoma City in 1910. Construction began on the Oklahoma State Capitol in 1914 and was completed in 1917. Originally, it housed the judicial branch of Oklahoma, but the state's high courts moved most
Oklahoma State Highway 3 ran through the area. The combined effect of US-66 being decommissioned and "3A" being a more logical name for an extension of Highway 3 led to the name change. State Highway 3A was decommissioned in 2009. Oklahoma State Highway 3 State Highway 3, also abbreviated as SH-3 or OK-3, is a highway maintained by the U.S. state of Oklahoma. Traveling diagonally through Oklahoma, from the Panhandle to the far southeastern corner of the state, SH-3 is the longest state highway in the Oklahoma road system, at a total length of via SH-3E (see below). Highway 3 begins at the Colorado