The advent of Interstate 10 created a situation where, at one point, four different signed routes would run along the state-maintained highway.

At the same time, hundreds of state-maintained highways which did not yet have a route number, such as the Preston-Norwich state highway, were assigned one.

By that time, it was the only state-maintained highway in Nevada that had not been constructed into a paved highway.

The highway is narrower than most state-maintained highways, and during times of high water levels on the Ohio River, it is often closed.

The first state-maintained highway along the path of US 131 was M-13, a designation applied to the road by July 1, 1919.

CR 9 is longer than five state-maintained highways in Orange County.

Route 41 does not intersect with another state-maintained highway, but does follow the former alignment of two.

As with other state-maintained highways in Texas, all Farm/Ranch to Market roads are paved.

The survey was part of a statewide effort to rebuild major through-traffic city streets as state-maintained arterial highways.

At the same time, hundreds of state-maintained highways that did not yet have a route number were assigned one.