Location: Main St and Market St, Grafton
Reassurance shield after the 3 junction.
Location: River Rd and Grafton Hills Dr, Jersey Cty
As we head out of Grafton, Route 100 runs parallel to the Mighty Mississippi, in what may be the most scenic area in Illinois.
Location: River Rd and Clifton Terrace Rd, Clifton Terrace, Madison Cty
A couple miles later, we’ll enter unincorporated Clifton Terrace.
Location: McAdams Pkwy and William St, Alton
A couple miles later, we’ll enter Afton and quickly approach US-67.
Location: McAdams Pkwy and Piasa St, Alton
At US-67, Route 100 ends.
Location: McAdams Pkwy and Piasa St, Alton
Turn left for US-67 north and right for US-67 south.
N to IL-111, S to IL-143
S to IL-109