SPENCER, IA (Northwestiowanow) — Clay County is preparing for a new state law that will raise the speed limit on most paved roads from 55 to 60 miles per hour.

Senate File 378, signed by Governor Kim Reynolds on June 1, increases the statutory speed limit on paved county roads effective July 1.  Clay County Engineer Cole Budach says that change triggered a required safety review of local roads.

The engineering study evaluated more than 200 miles of paved roads, focused on passing sight distance, no-passing zones, and warning sign placements. Officials found that while much of the system can safely handle the higher speeds, several stretches fall short.  As a result, Budach says some areas will temporarily remain posted at 55 miles per hour until improvements can be made.

Improvements include relocation of no-passing zones, extending pavement markings, and adjusting signage. Budach says the goal is to have all roads updated by the end of this year.

Drivers should also be prepared to see speed limits fluctuate on some roads, with 55 mile per hour zones appearing within otherwise 60 mile per hour stretches.  Clay County Sheriff Chris Raveling says local law enforcement will try to be flexible during the transition.

County officials emphasize that beginning July 1, 60 miles per hour will be the default on paved roads unless a lower speed is clearly posted.  However, any signs displaying 55 miles per hour should still be followed, as those locations may have safety concerns that still need to be addressed.

Crews will begin making the necessary updates in the coming months.