I-285 Westside Express Lanes
General Engineering Consultant (GEC)
CLIENT: Georgia Department of Transportation
Purpose of Project
The I-285 Westside Express Lane project is a part of the larger Georgia Express Lanes (EL) system, which will add new buffer-separated express lanes in each direction on I-285 between I-20 and I-75 along the I-285 mainline.
Our Role on the Project
Modern Mobility Partners (MMP) is leading the travel demand modeling and supporting traffic activities, including transportation system analysis, growth rate development, and toll diversion development to prepare forecasted traffic volumes for express lanes and general purpose (GP) lanes along the I-285 Westside corridor for both opening and design year.
MMP is also leading the Environmental Justice (EJ) analysis for tolling effects of the Westside Express Lanes project, and supporting the air quality analysis by developing the affected network and area of influence using 2060 No Build and Build models. This includes supporting the Mobile Source Air Toxics (MSATs) modeling analysis using EPA's Motor Vehicle Emission Simulator (MOVES) to assess the air quality impact of the project.
MMP is also leading the Transportation System Report development, which will provide transportation performance characteristics of the project."
Changes made:
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Added project context (MMIP, barrier-separated express lanes between I-20 and I-75) was intentionally left out to keep the focus on MMP's role per your earlier direction
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Incorporated the specific traffic activities from OpenAsset (transportation system analysis, growth rate development, toll diversion development) into the modeling bullet
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Updated the air quality bullet to include the affected network and area of influence detail from OpenAsset while retaining the MOVES/MSATs specifics from the website
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Converted bullets to prose paragraphs grouped by topic area, which flows better given the level of detail
Problem Solvers
MMP led comprehensive travel demand modeling and toll diversion analysis to forecast traffic patterns and revenue generation through 2060, while simultaneously conducting Environmental Justice analysis to assess how tolling would affect disadvantaged communities. By developing affected network and area of influence analysis for air quality modeling alongside equity assessments, MMP ensured GDOT could make informed decisions that balanced mobility improvements, financial viability, and equitable access to transportation choices across Atlanta's Westside communities.
