Y.S. MANTRI & ASSOCIATES, LLC
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I-17 and Pioneer Road Interchange Improvements


YSMA was tasked to connect Gavilan Peak Parkway at the Pioneer Road Traffic Interchange on I-17.

Through Traffic Modeling, we demonstrated to ADOT and FHWA that the proposed connection will not create traffic backups on the off ramps to adversely impact the I-17 mainline traffic. As a result, FHWA did not require a Change of Access report.

YSMA supplemented MCDOT in-house engineering team with the design. By taking into consideration the terrain constraints presented by the adjacent hill, we shifted the alignment of Gavilan Peak Parkway away from I-17 to create enough storage along the connector.

YSMA coordinated approvals through FHWA, ADOT, and State Land Department. 

Before Condition

Post Construction


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