Intersection Improvements 1000 North 600 West Logan, Ut

Introduction

An expansion of 1000 North is needed due to increasing development on the west side of Logan City. The intersection at 1000 North 600 West needs to be designed with goals to: expand 1000 North to five lanes, add traffic controls to the intersection, limit neighborhood impact, and improve the existing railroad crossing.

Alternatives

• Do Nothing– Leave the intersection as a 4 way stop.
• Roundabout– A roundabout to accommodate an expanded 1000 North.
• Signalized Intersection– A signalized intersection at the current intersection. This is the client's preferred alternative.
• Offset Intersection– A signalized intersection that is further away from the railroad.

Criteria

• Projected Capacity– The capacity of the alternative. This was 30% of the weight, with the signals weighing the most.
• Pedestrian Safety– Possible pedestrian safety measures. Weighed 10%, with the offset signal weighing the most.
• Traffic Safety– Number of conflict points. 5% of weight. Roundabout scored highest.
• Impact on Existing Businesses/Residences– How existing buildings are affected, with the least affected being the highest scored. 15% of weight, with doing nothing at the top.
• Railroad Interface– How the alternative interacts with the railroad. 25% of score, with regular signal winning.
• Other Interfaces– How alternative works around existing utilities. 15% of weight, with the do nothing alternative weighing the most.

Selected Alternative

Out of the proposed alternatives, a signalized intersection best fulfills the design criteria. It can handle a high capacity of traffic, ensure pedestrian and traffic safety, has a reduced impact on existing buildings, and works well with the railroad and utility interfaces.

Final Design

The intersection will have 5 lanes running to the east and west, with 3 running north and south. Each direction will have a dedicated turning lane, and the signals will be actuated lights. To ensure pedestrian safety, sidewalks will be constructed with proper crosswalk markings. The waiting queue will be placed before the railroad to prevent traffic from stopping on the railroad.

Acknowledgements

We would like to thank the following:

• Patrick Singleton, PhD (USU Faculty Advisor)
• Austin Ball, PE (USU CEE Senior Design Professor)
• Tom Dickinson, PE (City Engineer, Nibley City)
• Alex Oliphant, PE (Staff Engineer, Logan City)
• Jordan Duncan, EIT (Engineer In Training, JUB)