FREQUENTLY ASKED QUESTIONS (FAQs)

AASHTOWare OpenAPI is a standardized set of programming interfaces that lets external applications securely exchange data with AASHTOWare products.

Use AASHTOWare OpenAPI when:

• Connecting with AASHTOWare products (e.g., AASHTOWare Bridge ↔ AASHTOWare Project)
• Sending or receiving data from external systems (like e-Ticketing platforms)
• Initiating agency data exchange with third-party systems

More information about AASHTOWare OpenAPI is available on the Developer Portal About page.

AASHTOWare OpenAPI is built on open standards for easier collaboration across states, reduces implementation time and cost, and adds a layer of security when paired with firewalls.

AASHTOWare OpenAPI facilitates building once and deploying across multiple agencies. Examples include HaulHub, Asset Tracker, and U.S. Census integrations.

Common use cases of AASHTOWare OpenAPI include:

• External systems pushing/pulling data (e.g., HaulHub, Asset Tracker)
• Agency-to-agency collaboration (e.g., Ohio DOT ↔ Kentucky TC)
• AASHTOWare product-to-product sync (e.g., AASHTOWare Project ↔ AASHTOWare Bridge)
• Integration with agency systems (e.g., asset management, finance, design tools)

Yes! AASHTOWare OpenAPI supports integration with third-party and enterprise systems using standard API protocols.

By December 2029, all API access will require use of AASHTOWare OpenAPI. Direct database connections will not be supported after this date.

Third-party integration requirements include:

• Defined data flow and direction (one-way or bi-directional)
• Frequency considerations (real-time, batch, daily)
• Security (least privilege access)
• Plans for scalability and performance
• Access to any non-production AASHTOWare environments for initial prototyping and testing

Contact the support team to discuss specific integration requirements.

Yes! For example, AASHTOWare Pavement pulls climate data from FHWA via AASHTOWare OpenAPI—other apps can reuse this integration.

Follow these four steps to get started with AASHTOWare OpenAPI:

1. Identify your integration goals.
2. Review API documentation.
3. Get access to credentials.
4. Start with a small pilot project.

To use AASHTOWare OpenAPI, developers will need to obtain the following:

• An active AASHTOWare license
• A Developer Portal account
• Authentication credentials
• Network access to API endpoints

To use AASHTOWare OpenAPI, developers will need:

• Familiarity with web services, APIs, JSON/XML
• Programming languages like Python, Java, C#
• Low-code tools can also be used for simpler tasks

Documentation, like API specifications, examples and support, is available on the AASHTOWare Developer Portal.

Yes—by December 2029, all API access will transition to AASHTOWare OpenAPI. Other methods are out of scope (e.g., direct DB access).