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Highway 16 Reduced Collision U-Turn Near Dalmeny

Intersection upgrades are planned at the intersection of Highway 16 and the Dalmeny Access Road/Grid 684.

The intersection improvements are intended to address concerns about collisions resulting from right angle (T-bone) collisions. The upgrades will convert the intersection from a two-way stop-controlled intersection to a Reduced Collision U-turn (RCUT) intersection. A public information session was held in late November in Dalmeny to explain the intersection changes.

  1. Study Background
  2. Options Reviewed
  3. Reduced Collision U-Turn (RCUT)
  4. Next Steps
  5. Contact
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1. Study Background

Highway 16 is part of the national highway system and is a key connection between Dalmeny and the City of Saskatoon. The Dalmeny Access Road is a commuter route as well as an over-dimensional truck bypass route.

Intersection upgrades are planned at the intersection of Highway 16 and the Dalmeny Access Road/Grid 684 in 2023. The intersection improvements are intended to address concerns about severe collisions resulting from right angle (T-bone) collisions. The upgrades will convert the intersection from a two-way stop-controlled intersection to a Reduced Collision U-turn (RCUT) intersection.

Project Timeline

Collision history

2013 - Intersection Improvements

  • Dalmeny Access Road realigned to 90°
  • Right turn lanes
  • Median acceleration lanes
  • Area lighting

2018 - Intersection Safety Review

  • Identified possible solutions to address safety concerns.

2019 - Preliminary Design

  • Initial work to consider solutions.

2021 - Micro-simulation

  • Detailed analysis of proposed solutions.

2022 - Community Engagement

Existing Conditions

Travel Time

According to recent data, it took an estimated 20 and 30 seconds to cross Highway 16 during peak hours. If development proceeds as planned, that time may increase up to 12 minutes by 2035.

Risk-taking behaviour is expected to increase with longer delays at this intersection.

Traffic Volumes

  • Westbound - 1,600 vehicles daily
  • Eastbound - 1,600 vehicles daily
  • Crossing Highway 16 - 1,000 vehicles daily 
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2. Options Reviewed

Interim options considered prior to the construction of an interchange (20+ years).

Options Considered Benefits  Drawbacks
Signage and pavement markings Minor safety improvements No reduction in conflict points
Convert to two 'T' intersections Reduces conflict/collision points Does not address risk of right-angle collision
Eliminate through and left turns on Dalmeny Access Reduces conflict points Significant additional travel time
Traffic signals Public familiarity Increased risk of collisions and delays on Highway 16
Reduced Collision U-Turn (RCUT) Significant reduction in conflict/collision points
Fewer severe collisions and delays		 Requires driver education

Preferred Option

The Reduced Collision U-Turn (RCUT) is the preferred interim solution.

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3. Reduced Collision U-Turn (RCUT)

In-person event

There was an opportunity to discuss the project November 24. In addition, a virtual information session was also held.

Key Benefits

A Reduced Collision U-Turn (RCUT) will reduce conflict points by more than half (from 42 conflict points to 20) and eliminate almost all “crossing” conflict points that results in severe collisions.

The RCUT allows drivers to focus on one task at a time.

Overall travel time is expected to decrease in peak periods, making it easier for drivers to quickly and safely merge onto and across Highway 16 instead of waiting in a long queue.

By 2035, it will take 12 minutes to cross Highway 16 on Dalmeny Access Road during peak hours without intersection improvements. A RCUT is expected to reduce that time to under two minutes. Travel time during off-peak periods is expected to increase slightly.

Navigating through a reduced collision U-turn

Driving through the intersection is straight forward.

Drive.through.
  1. Drivers focus on one direction of traffic.
  2. Accelerate to highway speeds in a dedicated lane.
  3. Merge to a dedicated deceleration lane.
  4. Free-flow U-turn.
  5. Accelerate to highway speeds in a dedicated lane.
  6. Merge and continue safely!
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4. Next Steps

  • Driver education campaign
  • Project Tender
  • Construction scheduled to begin 2023
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5. Contact

For more information, please contact:

Geoff Meinert
Senior Project Manager, Ministry of Highways
geoffrey.meinert@gov.sk.ca
306-933-5966

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