Highway 1 Main Street/Dollarton Highway Interchange

Main Street Dollarton/Highway Interchange Project

The new Interchange included the reconfiguration of the Main Street/Dollarton Interchange on-ramp to improve safety, reduce traffic interruptions and to provide better transit accessibility to and from Highway 1.

The new reconfiguration of the Main Street/Dollarton Interchange on-ramps improves safety and reduces traffic interruptions  improve traffic flow onto the Iron Workers Memorial Bridge, and provides better transit accessibility to and from Highway 1.

Artist rendering of the Main Street/Dollarton Highway Interchange Improvements

Status

Construction started Summer 2020 - completed Fall 2021

Milestones:

  • Opening of the new Highway 1 Main Street Overpass: Completed Summer 2021
  • Opening of the new north side multi-use path on Main Streets: Completed Summer 2021
  • Opening of the new eastbound on-ramps adaptive signal system: Completed Fall 2021

Main Street/Dollarton Highway Interchange Adaptive Traffic Signal

The Main Street on-ramp and the Highway 1 eastbound on-ramp is controlled using an Adaptive Traffic Signal which uses alternate traffic entering the eastbound right lane on the Ironworkers Memorial Bridge. The Main Street on-ramp merges with a bus queue jumper lane originating directly from the Phibbs Exchange. eastbound Highway 1 traffic continues through the interchange in the two left lanes without any merging/weaving with on-coming traffic.

 See the Main St./Dollarton Highway Interchange Adaptive Signal in operation:

Main Street/Dollarton Highway Interchange Adaptive Traffic Signal

Active Transportation Improvements  

The Main Street/ Dollarton Interchange works has some exciting new upgrades for pedestrians and cyclists including:

  • Widening of the Main Street on-ramp to accommodate two travel lanes and a 3.0 m multi-use path (MUP);
  •  A new multi-use path (MUP) on the north side of Main Street.
  • Approach improvements for the existing pedestrian tunnel under the Highway 1 westbound off-ramp to Main Street westbound
  • Improvements to the pedestrian and cyclist crossing of Dollarton Hwy at the north end of the Ironworkers Memorial Bridge

Main Street On-ramp Retaining Wall   

A cast-in-place soil anchor retaining wall has been constructed along the Highway 1 eastbound on-ramp immediate north of the Ironworkers. The new wall is approximately 118m long and a max height of 6.2m. This concrete wall has accommodated the widening of the Main Street off-ramp and 3.0 m multi-use path onto the Ironworkers Memorial Bridge.

Sound Wall