For the first time in decades, Tama County has (sort of) paved a new rural road.
County Road T69, L Avenue, runs north-south just west of Dinsdale. It comes south from IA 175 as paved, but that stopped at the Grundy/Tama county line. When Tama County undertook a comprehensive rebuilding of D65 last year, the old asphalt from that was recycled into a bituminous/”blacktop” covering for T69.
By and large, rural Iowa roads are either paved with center- and edge-line markings or they are gravel. This is different from other states, where a middle style of not-gravel-but-not-painted blacktopping is plentiful. The new T69, though, is in this middle style, as is the former IA 362 in far western Iowa.
The county road/farm-to-market designation continues south on L Avenue, Ridge Road, and K Avenue to US 63, but there are no plans to change anything there.
(I am a little late to the party on this, but for a rural county this is a notable thing.)