South Central Projects

Interstate 19: San Xavier Road to Interstate 10 Design Concept Report and Environmental Assessment

ADOT, in association with the Federal Highway Association, evaluated improvements to I-19 to alleviate congestion and increase capacity within the corridor. The purpose of this project was to evaluate long-term improvements (2030) to I-19 between San Xavier Road and the I-10 / I-19 traffic interchange.

ADOT and FHWA has evaluated the need for construction of the ultimate or long-term improvements and identified those improvements in the Final Design Concept Report, to meet the needs of the traveling public.

I-19 Corridor Study: Interstate 10 to Pima / Santa Cruz County Line

ADOT completed a study in 2003 to identify transportation needs for the corridor through the year 2030. The study recommended long-term improvements through the year 2030 including additional lanes, auxiliary lanes and frontage roads in each direction of travel from San Xavier Road to I-10 with preferred short- and mid-term improvements, including additional interim travel lanes.

I-19 Project Assessment: San Xavier Road to Ajo Way

ADOT completed a Project Assessment (PA) in 2003. The purpose of the PA was to evaluate the feasibility of increasing the capacity of I-19.

I-10 / I-19 Traffic Interchange

Construction of the traffic interchange was completed in 2004.

I-19 Design Concept Report: San Xavier Road to I-10

ADOT completed the Design Concept Report (DCR) in spring 2012. The report is available below.

Civil RightsTitle VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA)