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Board adds 60 mph sight-distance guidance to driveways policy
Summary
The county updated its driveways and entrances policy to add sight-distance requirements for a new 60 mph speed limit on some county roads, referencing guidance from Iowa DOT and AASHTO.
County Engineer Laura Sievers told the board that recent legislative changes have made 60 mph a more common speed limit on some Woodbury County roads and that the driveways and entrances policy needed a clear sight-distance table to address that speed.
“60 mile per hour was not a speed that was a common Woodbury County speed until the legislature changed that back in on the July 1,” Sievers said, explaining the need to add minimum sight-distance measurements in feet. The revised PPM clarifies minimum sight distance at different speeds using guidance from Iowa DOT, FHWA and AASHTO.
The board approved the revised driveways and entrances policy 5-0.
