TRANSPORTATION ADVISORY BOARD AGENDA ITEM
ACTION REQUESTED:
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Receive the presentation on existing traffic conditions and public input related to the Road Improvement Plan Update
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DEPARTMENT: Transportation, Engineering and Development
SUBMITTED BY: Andy Hynes, PE, PTOE, Deputy City Engineer/Engineering Manager
BACKGROUND:
The City of Naperville maintains approximately 475 centerline miles of streets, including numerous arterial and collector roadways. Traffic flow and congestion on major roads has been a long-standing concern identified through past Community Surveys. Minimizing congestion on arterial roads and intersections also reduces travel times, lowers emissions, and reduces unnecessary traffic on neighborhood streets.
Between 1988 and 2008, the City of Naperville assessed a road impact fee. Acknowledging that new development results in additional traffic on the city streets and that capacity improvements were needed to accommodate the additional traffic; the purpose of the fee was to assess developers for the proportionate share of the costs of the improvement of the arterial road system.
A key component of the impact fee process was the development of the Road Improvement Plan. This plan consists of a list of numerous road corridors and intersection capacity improvements needed to meet minimum level of service requirements within a 20-year timeframe accounting for future development and traffic growth. A detailed traffic model was developed to identify capacity deficiencies and new improvements. The projects included in the approved Road Improvement Plan were added to the City’s Capital Improvement Plan budget with many implemented over the past 15 years.
Since the impact fee program was discontinued in 2008 and the associated model is approaching the end of its 20-year traffic projection, an updated high-level analysis of current and projected traffic conditions on Naperville’s road network is needed. The updated Road Improvement Plan will identify the location of road and intersection capacity issues and the modifications needed to reach acceptable levels of service (vehicle delay and flow). These improvements will be incorporated into the City’s Capital Improvement Program as new projects to be evaluated in further detail.
DISCUSSION:
In May 2024, the City hired Kimley Horn and Associates, Inc. to conduct a study to update the Road Improvement Plan. Over the past year, Kimley Horn worked with staff to collect traffic data, perform capacity analysis of intersections and corridors on the arterial road network, and gather public input. Kimley Horn will be presenting a summary of the technical analysis and public comments related to existing traffic conditions at the Transportation Advisory Board meeting.
The next step in the process will involve projecting 2050 traffic volumes on the arterial road network and developing a set of recommended improvements to include in the Road Improvement Plan that will best meet the City’s needs. These recommendations will be presented for TAB’s consideration at a future meeting.
A copy of the presentation slides is attached.