Buyer and Contact Bridges aren’t anchored on a signal, so their structured columns are buyer attributes and contact fields, rather than signal attributes. Those two sections are flagged below.
Contracts & POs Bridge columns
Anchored on purchase orders and contracts (Starbridge spend data sourced from FOIA records and web enrichment). These columns surface key details such as contract values, expiration dates, renewal windows, and incumbent vendors, helping you identify competitive replacement opportunities before they go to bid.
RFPs Bridge columns
Built around active bids and procurement postings. These columns surface key details such as due dates, budgets, procurement contacts, and submission requirements.
Meetings & Plans Bridge columns
Built around board meetings, meeting minutes, agendas, and strategic plans. These columns surface key details from each document.
Job Changes Bridge
Built around leadership changes at your target accounts, including new hires, promotions, role changes, and departures.
Buyers Bridge columns
Entity Bridge. A Buyer Bridge is anchored on a list of accounts, not a signal, so its structured columns are buyer attributes (buyer type, location, size, enrollment, budget, and more), collected and kept current by Starbridge. See All Starbridge Data for the full attribute reference.

Custom Web Signals Bridge columns
Built around custom topics, events, or buying signals you want to monitor across the web—such as grants, funding announcements, construction projects, leadership initiatives, or news mentions.
Contacts Bridge
Entity Bridge. A Contacts Bridge is anchored on people, not a signal, so its structured columns are contact fields (name, title, email, activity status, and related details) rather than signal attributes. See Enriching Contacts: Contact Bridges for how contacts are sourced and verified.

Conferences Bridge columns
Built around conferences and industry events. These columns surface key details such as event names, locations, dates, attendees, and descriptions.
Related
Enriching Bridges with Data
The overview of all enrichment column types.
How to Create a Bridge
The full builder walkthrough for every column type.