Program Audits

Accessibility Assistance: The Independent Office of Audits and Investigations makes every attempt to ensure our documents are accessible. Due to variances between assistive technologies, there may be portions of these documents which are not accessible. Where documents cannot be made accessible, we are committed to providing alternative access to the content. Should you need additional assistance, please contact us at (916) 323-7111 or email ioai.admin@dot.ca.gov.

FY July 1, 2023 - June 30, 2024

Airspace Program (Part I): Audit of the California Department of Transportation’s Oversight of an Airspace That Caught Fire Underneath Interstate 10 in Los Angeles on November 11, 2023

Issued: 5/30/2024

Pursuant to Government Code, section 14461, and at the request of the director of Caltrans, the Independent Office of Audits and Investigations completed its audit of the California Department of Transportation’s (Caltrans’) administration of the airspace property, located at and around 14th and Lawrence streets, in Los Angeles, California. This report represents the first report, in a series of reports, that we anticipate releasing related to Caltrans’ administration of the airspace program.

Airspace Program (Part I) (PDF)

Department of General Services Contract Delegation Audit

Issued: 4/12/2024

Pursuant to Public Contract Code, Section 10351(a)(4), the Independent Office of Audits and Investigations completed its audit of Caltrans’ contract delegation. The Department of General Services exempts contracts under $150,000 from its approval under the condition that Caltrans meet the biennial audit requirement. This audit is the first of the two required audits.

Department of General Services Contract Delegation Audit (PDF)

Audit of the Clean California Program: Litter Abatement Efforts

Issued: 3/28/2024

Pursuant to Government Code, Section 14461, the Independent Office of Audits and Investigations completed its audit of the litter abatement efforts within the Clean California Program.

Audit of the Clean California Program: Litter Abatement Efforts (PDF)

FY July 1, 2022 - June 30, 2023

Department of General Services Contract Delegation Audit

Issued: 12/27/2022

Department of General Services Contract Delegation Audit (PDF)

The Delta Ferries

Issued: 11/7/2022

Pursuant to Government Code, Section 14461, the Independent Office of Audits and Investigations has completed its audit of the Sacramento-San Joaquin River Delta ferries.

The Delta Ferries, Program Audit (PDF)

Transportation Management Systems Audit

Issued: 10/6/2022

The Independent Office of Audits and Investigations has completed its audit of the California Department of Transportation performance outcomes for the transportation management system. Senate Bill 1 (Beall, Chapter 5, Statutes of 2017) requires 90 percent of TMS units to be in good condition by 2027.

Transportation Management Systems, Program Audit (PDF)

FY July 1, 2021 - June 30, 2022

California Department of Transportation 2019-20 SB 1 Efficiencies Report Audit

Issued: 6/14/2022

The Independent Office of Audits and Investigations has completed an audit of the California Department of Transportation's (Caltrans) SB 1 2019-20 Efficiencies Measures Report. The Road Repair and Accountability Act of 2017 requires Caltrans to, among other things, implement efficiency measures with the goal of generating at least $100 million per year in savings to invest in the maintenance and rehabilitation of the state highway system.

California Department of Transportation 2019-20 SB 1 Efficiencies Report Audit (PDF)

Audit of SB 1 Performance Measures and Targets & Bridges

Issued: 1/31/2022

The IOAI completed an audit of the California Department of Transportation (Caltrans) bridges performance measures and targets. Senate Bill 1 (Beall, Chapter 5, Statutes of 2017) requires Caltrans to fix not less than an additional 500 bridges over a 10-year period ending in 2027.

Caltrans - SB 1 Performance Measures and Targets & Bridges (PDF)

Caltrans - Divisions of Construction and Maintenance Zone Enhanced Enforcement Programs

Issued: 7/16/2021

The IOAI completed an audit of the Caltrans Construction Zone Enhanced Enforcement Program (COZEEP) and Maintenance Zone Enhanced Enforcement Program (MAZEEP). The purpose of this audit was to determine if COZEEP and MAZEEP had adequate internal controls over the administration of the contracts with the California Highway Patrol (CHP), identify any weaknesses in the process, and make recommendations for improvement. The audit did not include a review of the CHP process over COZEEP and MAZEEP programs.

Caltrans - Divisions of Construction and Maintenance Zone Enhanced Enforcement Programs (PDF)

FY July 1, 2020 - June 30, 2021

Caltrans - Baseline for SB 1 Performance Outcomes – Culverts

Issued: 5/3/2021

The IOAI completed an audit of the Caltrans Culvert Inspection Program. The Road Repair and Accountability Act of 2017, otherwise known as Senate Bill 1 (SB 1), was signed into law on April 28, 2017. One of the performance outcome requirements of SB 1 is that 90 percent of culverts must be in good or fair condition by the end of 2027. The audit included an evaluation of the actions taken to establish an accurate and complete inventory and baseline condition of culverts, a re-inspection program, and a monitoring process to measure progress in meeting SB 1 performance outcomes.