The city retained HDR Engineering to complete a technical analysis of future transportation enhancements on Main Street. The project seeks to improve pedestrian facilities and vehicular flow throughout the corridor.

Short-Term Enhancements

Goals:

• Improve vehicle progression along the corridor
• Reduce travel times
• Improve pedestrian space where possible
• Invest in a roadway configuration that will operate well in future years

Short-term improvements:

• Removed pedestrian scramble to improve traffic flow
• Adjusted pedestrian crossing times to better serve pedestrians
• Worked with ITD to improve signal technology
• Implemented coordinated signal timing

Long-Term Enhancements

#1 – Current conditions / no change

Microsimulation video of option #1:

#2 – Add left turn lanes at Sun Valley Road

Currently, Main Street consists of 4 travel lanes with no designated turn lanes. This option would add a designated turn lane.

Benefits:

• Remove split phasing
• Reduces congestion
• Serves all traffic
• Design year traffic sees comparable travel times to today

Drawbacks:

• Increase in pedestrian crossing distance at Sun Valley Road Intersection
• Tight turning movements for trucks at Sun Valley Road
• Removes parking on two blocks

Microsimulation video of adding a left turn lane:

#3 – Lane Reconfiguration

Currently, Main Street consists of 4 travel lanes with no designated turn lanes. This option would have 2 travel lanes with 1 designated turn lane.

Benefits:

• Remove split phasing
• Shorter pedestrian crossings
• Much wider pedestrian and sidewalk areas could be built

Drawbacks:

• Congestion on Main Street would increase
• Cannot serve all traffic in the peak period
• Waiting vehicles could extend 3 blocks or more on Main Street and 2 blocks or more on cross streets

Microsimulation video of 3 lanes: