This is an image of the I-5 highway that is part of the audit.

California Department of Transportation, District 7, Interstate 5 North High Occupancy Vehicle Corridor, Project Audit

Issued: 11/8/2024

We audited the costs that the California Department of Transportation, District 7 incurred related to the Interstate 5 North High Occupancy Vehicle Corridor project totaling $916,110,612.

District 7, Interstate 5 North High Occupancy Vehicle Corridor, Project Audit
This is an image of the destruction cause by fire related to the Airspace Program Audit.

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)
This is an image of Clean California garbage bags that are filled.

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)
This is a generic image of a road with mountains behind it.

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)
This is an image of the California State Capital building.

Peninsula Corridor Joint Powers Board, Project Audit

Issued: 3/25/2024

On behalf of the Independent Office of Audits and Investigations, the California Department of Finance, Office of State Audits and Evaluations (Finance) completed its audit of the Peninsula Corridor Joint Powers Board (JPB). Finance audited the costs that JPB incurred related to three projects, of which the California Department of Transportation reimbursed JPB a total of $105,924,553.

Peninsula Corridor Joint Powers Board, Project Audit (PDF)