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SIIMS

Resources and information

Current Updates SIIMS Training SNBI Implementation 2023 ICEA Conference-Basics of SIIMS Work Type & Workflow Filters/Dashboard View Edit Assets/Reports Maps June 2023 SIIMS Update

 

Federal Highway Administration (FHWA) Memoranda1985 - Permits over 80,000 pounds allowed on Interstate highways 1993 - Requirements for using Load Factor Rating Method 2004 – Rating Method codes for NBI reporting 2006 – When can ASR vs. LFR vs. LRFR be used 2011 - Revisions to NBI items 31, 63, and 65 2011 – Revision to Rating Method codes for NBI reporting

 

National Bridge Inspection Standards (NBIS)Load Ratings for NBIS and SNBI Compliance NBIS Metrics NBIS 2005 FHWA's FAQ on the NBIS Recording and Coding Guide for the Structure Inventory and Appraisal Errata - June 2012 Errata - February 2018 Input Procedures for FHWA Metrics

 

Underwater Inspection ProceduresWading Inspection Procedures Diving Inspection Procedures

 

BrR Iowa Standard Templates      Updated April 2025 AASHTOWare Bridge Rating Training Material TR-832_Status on Template Completion Iowa DOT BrR System File UpdatesIowa DOT BrR System and Library Data Summary_DRAFTBrR Templates Library and System Files Supporting Calcs

Load Ratings for Standard BridgesIowa Load Rating Vehicles Phase 1 – 1982 ASR Rating Method Phase 2 – 1991 ASR Rating Method Phase 3 – 1998 ASR Rating Method Phase 4 – 2008 LFR Rating Method Phase 5 – 2016 LFR Rating Method Amendment to Phase 4 for SHV ratings Concrete Box Beam Standards Phase 6 - 2021 Load Rating for Standard Bridges

 

 

Load Rating Tools for Concrete Box CulvertsLRFD CIP Reinforced Concrete Box Culvert Program

 

LARS Input and File Upload RequirementsLARS Input Spreadsheet LARS Consultant Requirements

 

Iowa DOT Maintenance and Inspection ManualsBridge Inspection Manual Bridge Maintenance Manual Bridge Rating Manual Emergency Response Manual Bridge Rail Guide

 

Training videosSNBI Training Video
May 2023 SIIMS Webinar Recording May 2023 SIIMS Webinar Presentation Finding Structures Information Available in SIIMS for Structures Data Update Inspection Type Under Water Inspection Form

 

Other informationListing of Bridge Inspection Agencies County and City Engineer's Form 107 Download Instructional Memorandum 7.020 Bridge Inspections

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