Below is a list of covered bridges in Illinois. There are nine authentic covered bridges in the U.S. state of Illinois. Five of them are historic. [1] A covered bridge is considered authentic not due to its age, but by its construction. An authentic bridge is constructed using trusses rather than other methods such as stringers, a popular choice for non-authentic covered bridges.
There are more than 1,500 properties and historic districts in the U.S. State of Colorado listed on the National Register of Historic Places. They are distributed over 63 of Colorado's 64 counties; only the City and County of Broomfield currently has none.
This is a list of the National Register of Historic Places listings in El Paso County, Colorado.