State Route 88 (Apache Trail) Study, Milepost 222 to 229

State Route 88 (Apache Trail) Study, Milepost 222 to 229



In fall 2023 ADOT completed the state legislature appropriated funding for a study of the 7-mile section of State Route 88 (Apache Trail) east of the Fish Creek Overlook to Apache Lake Marina Road (mileposts 222-229) that was closed in 2019 due to extensive roadway damage and rock debris.

The focus of the study, funded through an appropriation by the state legislature, was to determine the feasibility of reopening SR 88 to vehicles, identify potential improvements and their cost and improve the resilience of this roadway to future storm events. The study included a Design Concept Report and environmental review, in accordance with the National Environmental Policy Act of 1969 (NEPA), for a range of potential improvements.

More than 1,600 Arizonans provided input on the draft study recommendations by attending an Aug. 16 public meeting, completing online surveys and through other methods. 

ADOT final recommendation, identified in the final Design Concept Report, calls for $33.7 million in improvements to safely and sustainably restore SR 88 access, including: 

  • chip sealing, in which aggregate is compacted into heated asphalt liquid to create a more durable road surface, throughout the 5 miles;
  • widening the roadway to 15 feet in steeper areas;
  • increasing drainage capacity to accommodate heavier rainfall; 
  • rehabilitating or repairing existing bridges; and 
  • adding pullouts and other safety enhancements. 

ADOT is pursuing federal funding to advance these improvements. 

Study Area Map

SR 88 Study Map

Contact Us

Email:  [email protected]

August 16, 2023 Meeting documents

Public Meeting Notice

Fact Sheet


Presentation recording

Welcome Display Board

Alternative Description Board

Environmental Overview Display Board

Engineering Issues Display Board

Environmental Resources Display Board

SR 88 Preferred Alternative Cross Section Board

Roll Plot Final 1

Roll Plot Final 2

Roll Plot Final 3

SR 88 Meeting Summary Report


Draft Design Concept Report (Draft DCR)

SR 88 Initial Design Concept Report

Appendix A: Roll Plots

Appendix B: Environmental Overview

Appendix C: Draft Geotechnical Assessment

Appendix D: Resilient Analytics


Final Design Concept Report (Final DCR)

The final Design Concept Report (DCR) document and supporting appendices for ADOT’s Recommended Alternative for SR 88 improvements are linked below.

SR 88 Final Design Concept Report

Appendix A

Appendix B

Appendix C

Appendix D

SR 88 Apache Trail - Initial Bridge Study

SR 88 Preliminary Drainage Report