In order to have an accurate 2024 inventory for the NBI submittal, replaced or removed structures are not archived from now until the submittal is complete.  

  The structures will be removed from the SIIMS in service inventory shortly after the FHWA submittal is approved.

The Iowa Department of Transportation's (DOT) Structure Inventory and Inspection Management System (SIIMS) system is the single source location for entering and reviewing condition information on all Iowa bridges, both local and state owned. The system offers a variety of features and capabilities. 

If you are having issues with your LOGIN TO SIIMS, please send an e-mail to siims.support@iowadot.us

SIIMS Service Request Template

Please also see the Resources and Information page for the items listed below.

SIIMS SNBI Training   SNBI Implementation   SNBI Training Video

The training for SIIMS provided in 2023 is available.   SIIMS Training     Recording

Documentation for the updates to SIIMS from June 2023 is available.   SIIMS June Updates