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I-10 Ruthrauff to Ina

The Arizona Department of Transportation (ADOT), in conjunction with the Federal Highway Administration (FHWA) and the Regional Transportation Authority in Pima County, planned and made improvements to a 6-mile segment of I-10, between the Ina Road TI and the Ruthrauff Road TI. The purpose of the project was to increase capacity and enhance safety for commuters and general traffic, including truck traffic traveling along this portion of the I-10 corridor. KAI's role was to conduct a traffic study to recommend geometric and traffic control improvements, as well as detour strategies to minimize construction impacts. DynaSmart models were developed for the study purposes.


KAI developed a sub‐regional DynusT ‐based DTA model for the evaluation of improvements to a 5‐mile section of the I‐10 corridor in Tucson. Model development included integration of traffic control (signal operations, stop/yield control), modifying the network to include planned improvements, and calibration. The model was applied to the evaluation of needed corridor capacity improvements and implementation phasing.