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US 271 and South Loop 485 Traffic Projections and Analyses, Smith and Gregg  Counties, TxDOT Tyler District

Client: TxDot Tyler District


Services: Data Collection, Capacity Analysis, Traffic Projections, Corridor Analyses


Completion Date: December 2017


Location: Smith and Gregg Counties

Jones|Carter was selected by the TxDOT Tyler District to perform traffic projections and analyses for a high growth corridor identified for potential roadway improvements. The projections were used to assist the Tyler District in planning future improvements for 20 intersections along 10.5-miles of US 271 and South Loop 485 in Smith and Gregg Counties.

Traffic data and regional influences were analyzed and a methodology was developed to help predict future traffic volumes and intersection turning movements for 2026, 2046, and 2056 conditions. Traffic signal warrant analyses were performed at all intersections in accordance with the Texas Manual on Uniform Traffic Control Devices. As a result of the study, new traffic signals were recommended at four different intersections.

The initial investigation included collecting traffic data for turning movement counts, 24-hour volume counts, and vehicle classifications along the corridor. The data was collected during both morning and evening peak hours. Observations regarding existing traffic operations and turn-lane queues were noted. Existing conditions diagrams were prepared at the intersections detailing the intersection alignment, traffic control, signing, pavement markings, lane assignments, and regulatory signs.

The Traffic Projections and Analyses were completed in December, 2017.

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