Senate clears bill allowing DOT to set 75 mph maximum on some rural interstates after heated debate

The Utah Senate on Jan. 23 passed Senate Bill 21, which authorizes the Utah Department of Transportation to set maximum speed limits up to 75 miles per hour on rural interstates and up to 65 mph on other highways, subject to local studies and commission determinations.

Sponsor Senator Mike Dimitryk told the chamber the bill places a ceiling — “not to exceed 75 mile an hour on rural interstates” — while leaving siting and safety determinations to technical staff and a commission. That technical‑expert argument was central to supporters’ floor remarks: Senator Holmgren and others said design and traffic flow make certain rural stretches suitable for higher limits.

Opponents pressed safety concerns. Senator Taylor moved to amend the bill by reducing the statutory ceiling from 75 to 70 mph; several senators (including Taylor, Petersen and others) said the increase to 75 made some constituents uncomfortable and raised risks for less experienced and elderly drivers. The amendment was put to a standing/voice test and failed; the sponsor and other supporters argued the bill only sets a maximum and that specific corridors would be studied before any increase is posted.

On the roll call, the Senate recorded 22 ayes, 4 nays and 3 absences and passed the bill to the House. Floor comments referenced both rural freeway stretches where 75 mph was appropriate and the need to consider minimum speed and passing behavior to reduce hazardous passing maneuvers.

SB21 now advances to the House for its committee review and final consideration.