^Looking west alongside a trailblazer just beyond the Edgewood Road exit, May 2022.
Iowa Route 100 is a newer four-lane divided highway wrapping around the northern and northwest sides of Cedar Rapids. The western half is a fully-formed freeway, heading west from its central volleyball interchange with Interstate 380, through a curve to the south, to a terminal interchange at US Route 30 (concurrent with US Route 218). The eastern half is a surface road with signalized intersections through Marion, Iowa-- but this surface road didn't stop being a four-lane divided highway. And indeed, the eastern end is also a signalized intersection as well, at US Route 151's duplex with Iowa Route 13.
My photo of Iowa Route 100 signage comes from its eastern terminus, where Iowa Route 100 meets the concurrency of Iowa Route 13 and US Route 151. Like many of the major intersections along Iowa's four lane highways, this intersection is one with ridiculously offset, ridiculously long mast arms. The signage depicted faces north for southbound traffic on US Route 151 and Iowa Route 13. The photo comes from July 1, 2017, along the trip across eastern Iowa (the word "eastern" is used somewhat loosely).
Here are some additional photos taken along Iowa Route 100:
Here are some additional photos taken along Iowa Route 100:
The southwestern end marker for Iowa 100, at US Route 30 on the southwest side of Cedar Rapids.
Iowa 100 meets its southwestern end at US Route 30.
Iowa 100 reaches Exit 3, for Covington and Cedar Rapids.
Iowa 100 heads west through its interchange with Edgewood Road, labeled as Exit 7.
Iowa 100's westbound reassurance marker, seen by those heading west from Exit 7 to Edgewood Road.
Iowa 100 meets Interstate 380 at a full interchange. East of here, Iowa 100 is a surface highway, as opposed to the full freeway that heads west from this point. The interchange here is labeled as Exit 9.
Iowa 100 crosses US Route 151's business route in Marion.
Iowa 100's eastern end marker at US Route 151 and Iowa 13.