Helping People Cross Main St. at 600 S

Team: Josh Ritter, Christine Gillie, Will Washburn, Alyssa Gaither, and Justin Dunn

Sponsor: Logan City

Figure 1. Existing site. There are no protected crossings for 2-3 blockseither direction.

Figure 1. Existing site. There are no protected crossings for 2-3 blockseither direction.

Project Summary

Logan is trying to become a more walkable, accessible city by introducingpedestrian and cyclisttransportation facilities. A major active transportation crossing would be built across Main St. near West 600 South. Due to its proximity to the Logan River, it is necessary to evaluate the best alternative for longevity of the structure to persist in the future for extended use

Alternatives

  • Ferry
    • Ferry boat to connect both sides of Main using the Logan River.
  • Underpass
    • Box culvert underpass to take pedestrians under the road.
  • Overpass
    • Bridge overpass over Main, with stairs and elevators for accessibility.
  • Pedestrian Traffic Signal
    • Crosswalk with a traffic signal to allow signal protected crossings.
  • Do Nothing
Figure 3. Our design of the underpass and hte accessible ramps top get down to it.

Figure 3. Our design of the underpass and hte accessible ramps top get down to it.

Selection Criteria

We chose the Underpass alternative based on criteria including minimal vehicle impact and improved pedestrian traffic, achieved ADA compliance, user-friendliness, low maintenance needs, reduced risk compared to other options, potential for enhanced aesthetics, minimal river impact, and reduced congestion. While constructability poses challenges, its medium cost comparison makes it a viable choice.

Figure 2. ChatGPT generated image showing the importance of providing safe crossings.

Figure 2. ChatGPT generated image showing the importance of providing safe crossings.

Selected Alternative

Storm Engineering prepared designs for an underpass across Main St. at 600 South, and a trail to connect Logan city’s trail system. The final design includes structural details, civil plans,hydraulic profiles, and a geotechnical report.

The structure of the underpass is precast reinforced concrete designed to withstand passing semitrucks. The drainage system is designed to pump the water from a 100-year storm event to the Logan River. The trail system meets ADA requirements by not exceeding maximum slopes and providing intermittent landings.