Iowa State Route 146 runs north-south in Southeastern Marshall County. This runs from the Tama/Marshall County Line to Le Grand. IA St Rt 146 passed through the following towns in Marshall County. Gilman
Le Grand IA St Rt 146 is not multi-plexed in Marshall County. IA St Rt 146 intersects the following highway in Marshall County. U.S. Rt. 30, at Le Grand.
SB IA St Rt 146 north of Gilman. SB IA St Rt 146 in Le Grand. The northern end marker.
