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Caltrans personnel may login using their CTPass credentials but you must also have an active DIME account to proceed.

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For Caltrans employees

Please contact your Caltrans DIME organization manager to create an account for you. If you are unsure whom to contact, you may click here to find your Caltrans DIME organization manager.

For external suppliers, companies and testing laboratories

For non-Caltrans companies, testing labs or organizations requiring DIME access, please begin by searching for an existing organization account. If your organization already has an account, please reach out to your organization's DIME account manager and ask to be added. If you could not find your company in the DIME system, you may request that a new DIME organization account be created for you. You must provide a project or contract number and/or specify the reason why you need a DIME account.

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