{ "culture": "en-US", "name": "Bridges_Structures_SNBI", "guid": "EAED9DCA-35F5-4915-8C2C-ABB73BA1A8F1", "catalogPath": "", "snippet": "Point and line geometry of all Iowa bridges and structures", "description": "

All Iowa bridges and structures along with historic tabular data. Service updates nightly.<\/span><\/p>

New SNBI bridge data is provided starting in CY2026 and is live data from SIIMS. Associated layers and tables in this service do not include FHWA SNBI data yet (e.g., good, fair, poor) and is now coming from the Iowa DOT via SIIMS.<\/span><\/p>

<\/p>

Layers Summary:<\/span><\/p>

\u2022 SNBI Bridge FC Point (0) \u2013 based on the new SNBI data schema<\/span><\/p>

\u2022 SNBI Bridge FC Line (1) \u2013 based on the new SNBI data schema<\/span><\/p>

<\/p>

Tables Summary:<\/span><\/p>

\u2022 SNBI 01 PRIMARY TBL (2)<\/span><\/p>

\u2022 SNBI 02 FEATURES TBL (3)<\/span><\/p>

\u2022 SNBI 03 SPAN SETS (4)<\/span><\/p>

\u2022 SNBI 04 SUBSTRUCTURE SETS (5)<\/span><\/p>

\u2022 SNBI 06 POSTING EVALUATION (6)<\/span><\/p>

\u2022 SNBI 08 ELEMENTS (7)<\/span><\/p>

\u2022 SNBI 09 WORK (8)<\/span><\/p>

\u2022 SNBI 10 ROUTES (9)<\/span><\/p>

<\/p>

See NBI Guide for more info about the National Bridge Inventory (NBI) data fields and structure. <\/span><\/p>

See SNBI guide for more info about the new Specifications for the National Bridge Inventory (SNBI) data fields and structure.<\/span><\/p>

For GIS data questions, contact the Iowa DOT GIS team: dot-gis@iowadot.us <\/span><\/p>

For general bridge data or inspection questions, please contact the Iowa DOT Bridges & Structures team: siims.support@iowadot.us<\/span><\/p>

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