Rochester Project Overview

The purpose of this project is to convert the two toll plazas on the Spaulding Turnpike (NH 16) – in Dover and in Rochester –  to All Electronic Tolling (AET) facilities. The Frequently Asked Questions section of this website at provides more information on the benefits of AET and what this change will mean to you.

As of now, AET is operating between 10 pm and 6 am – NO CASH will be accepted during this time period.

Construction and Traffic Updates

There are no construction and traffic updates at this time.

Construction Tasks

  • The road in the vicinity of the Rochester toll plaza area will be reconstructed to two lanes in each direction to accommodate AET and open road travel along the turnpike.
  • The existing road width at the plazas themselves will be reduced to meet the needs of the two-lane facility.
  • Pavement surfaces through the entire project area will be reconstructed.
  • Photo of an AET gantry structure.Existing parking lots will be removed.
  • A concrete barrier will be placed in the median beginning at the south end of the project area and continue north to where the concrete barrier will meet the existing median treatment (the existing median concrete barrier in Rochester).
  • The Dover plaza requires demolition of the six existing tolling lanes, five concrete barrier islands and toll booths, canopy, and all connected appurtenances.
  • The toll plaza administration building and the equipment building will be demolished, and the tunnel decommissioned.
  • The proposed AET gantry will support overhead electronic toll collection equipment, which will “go-live” once installed and tested.  To support the transition to AET, overhead signs will be installed on the approaches to make it clear to travelers that tolls can be paid by electronic or invoicing means only.
Rochester Project Plans

Traffic Impacts

Traffic impacts are expected over two construction seasons (see schedule below) and will include multi-phase construction operations at both sites.  Nighttime operations are anticipated at both sites for operations such as paving, plaza/canopy removals, and gantry installations.  General traffic control operations will consist of lane shifts, lane reductions, installation of a portable concrete barrier, attenuators, and temporary lighting.

    Meeting Information

    A virtual public meeting took place on February 18, 2021. 

    Schedule Information

    The project is targeted to begin construction in Fall 2021.

    Construction will affect traffic during 2022 and 2023.

    The full-time conversion to AET will take place in Fall 2022. (AET is currently in operation between 10 pm and 6 am.) All construction will be completed in Fall 2023.

    Contact Us

    If you have a question on this project, please send us an email at:

    For more details on this project, go to