Repaving work begins Monday, June 27 on State Highway 45 between Walters Ferry and Nampa

The Idaho Transportation Department (ITD) is making improvements to State Highway 45 between the State Highway 78 junction in Walters Ferry and Deer Flat Road in Nampa. Construction on the 13-mile stretch of road will begin Monday, June 27. All work is expected to be complete by early September.

Construction plans include replacing the bridge deck at Mora Canal, resurfacing the pavement between the SH-78 junction in Walters Ferry and Deer Flat Road in Nampa, and widening the turning radius on SH-45 at Missouri Avenue and at Patterson Avenue. This project will extend the life of SH-45.

Motorists should expect the following traffic impacts this summer:

  • Work will take place during the day and night.
  • One lane of SH-45 will be open with flaggers directing traffic. Please plan for delays up to 15 minutes.
  • The speed limit will be reduced.
  • Drivers can expect an uneven road surface and bumps when entering SH-45.
  • Access to and from homes and businesses may be closed for up to one hour. ITD will notify those affected prior to closures.

Work will temporarily pause over the Independence Day holiday weekend. For more information about the project visit

ITD and the Idaho State Police advise motorists to slow down and pay attention when driving in work zones, where increased speeding fines and other penalties apply. Motorists are encouraged to plan ahead and visit for information on the state highway or interstate system.