Interchange Design Concepts - Loop 101 (Pima Freeway), Princess Drive to Shea Boulevard

Planned improvements include:

• Adding a third left turn lane onto southbound Loop 101
• Extending the medians to increase the length of the left turn bays to improve traffic flow during peak hours.

Planned improvements include:

• Modifying the current design from a Single-Point Urban Interchange (SPUI) to a Tight Diamond Interchange (TDI) to improve traffic flow and capacity on Frank Lloyd Wright Boulevard, particularly during peak hours. Traffic flows through a TDI with one signal approaching Loop 101 and another under the bridge to allow traffic on Frank Lloyd Wright Boulevard to turn left onto the freeway or continue straight, which increases traffic capacity.
• Eliminating the curved ramps for left turns onto the freeway, and replacing with tight diamond on-ramps.
• Restriping to accommodate intersection improvements and an additional northbound through lane.
• Constructing a center lane median.
• Constructing/reconstructing sidewalks on both sides of the road near the interchange to comply with current ADA standards.
• Accommodating future bicycle lanes.

Proposed improvements include:

• Adding a second right turn lane on the westbound Loop 101 off-ramp.
• Adding a right turn lanes on the eastbound Loop 101 off-ramp and to the northbound on-ramp.
• Reconstructing the sidewalks near the additional right turn lanes to comply with current ADA standards.

Proposed improvements include:

• Extending of the right turn lane from westbound Shea Boulevard to northbound Loop 101.
• Reconstructing the sidewalk on the north side of the roadway to comply with ADA current standards.