Sign Support Structure Standards On this page... Steel Cantilever Sign Truss Steel Overhead Sign Truss Roadside Dynamic Message Sign Support Contact Search Sign Support Standards Not finding what you need? Search the Sign Support Standards Index. Standards Updates Updated on April 7, 2026. Summary of updates to standards (Starting March 2015) Bridge Links & Resources View the CADD bridge standard plan files and design manual and commentary disclaimer Back to top Steel Cantilever Sign TrussDownload DGNDownload PDFModel NameRevision DateFile DescriptionSCST-01-1711/25Index and NotesSCST-02-1711/25Sign Support ViewsSCST-03-1703/19Isometric View Typical TrussSCST-04-1703/19Truss-to-Post Connection DetailsSCST-05-1704/20Gusset Plate Connection DetailsSCST-06-1704/20Post BaseSupport DetailsSCST-07-1711/25Sign Attachment DetailsSCST-08-1703/19Foundation Details - Spread FootingSCST-09-1711/25Foundation Details - Drilled Shaftโคข Back to top Steel Overhead Sign TrussDownload DGNDownload PDFModel NameRevision DateFile DescriptionSOST-01-1106/25Index and Notes for 50โ-130โ SpansSOST-02-1106/25Elevation Views for 50โ-75โ SpansSOST-03-1106/25Elevation Views for 80โ-100โ SpansSOST-04-1106/25Elevation Views for 105โ-115โ SpansSOST-05-1106/25Elevation Views for 120โ-130โ SpansSOST-06-1106/25Support Base and DMS Electrical Access Details for 50โ-100โ SpansSOST-07-1106/25Support Base and DMS Electrical Access Details for 105โ-130โ SpansSOST-08-1106/25Gusset Plate ConnectionsSOST-09-1106/25Truss Support and Chord Splice Details for 50โ-100โ SpansSOST-10-1106/25Truss Support and Chord Splice Details for 105โ-130โ SpansSOST-11-1106/25 Sign Attachment DetailsSOST-12-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-13-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-14-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-15-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-16-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-17-1106/25Foundation Details - Non-stagedSOST-18-1106/25Conduit Location DetailsSOST-19-11 -SOST-21-1106/25Foundation Details - Stagedโคข Back to top Roadside Dynamic Message Sign SupportDownload DGNDownload PDFModel NameRevision DateFile DescriptionRDMS-01-1312/21Index and Notes for D.M.S. Sign SupportRDMS-02-1303/19Support Frame DetailsRDMS-03-1303/19Work Platform DetailsRDMS-04-1304/20Support Post Base DetailsRDMS-05-1303/19Footing DetailsRDMS-06-1303/19Rotational Viewโคข Back to top Contact Bridge Methods Email Address Bridge.Methods@iowadot.us For inquiries regarding the Bridges and Structures Bureau Design Manual, Standards, and CADD workflows. Back to top Secondary Navigation Menu Bridge & Culvert Standards Bridge Standards County Bridge Standards LRFD Culvert Standards LRFD Precast Culvert Standards Pedestrian Tunnel Standards Sign Support Structure Standards
On this page... Steel Cantilever Sign Truss Steel Overhead Sign Truss Roadside Dynamic Message Sign Support Contact Search Sign Support Standards Not finding what you need? Search the Sign Support Standards Index. Standards Updates Updated on April 7, 2026. Summary of updates to standards (Starting March 2015) Bridge Links & Resources View the CADD bridge standard plan files and design manual and commentary disclaimer Back to top Steel Cantilever Sign TrussDownload DGNDownload PDFModel NameRevision DateFile DescriptionSCST-01-1711/25Index and NotesSCST-02-1711/25Sign Support ViewsSCST-03-1703/19Isometric View Typical TrussSCST-04-1703/19Truss-to-Post Connection DetailsSCST-05-1704/20Gusset Plate Connection DetailsSCST-06-1704/20Post BaseSupport DetailsSCST-07-1711/25Sign Attachment DetailsSCST-08-1703/19Foundation Details - Spread FootingSCST-09-1711/25Foundation Details - Drilled Shaftโคข Back to top Steel Overhead Sign TrussDownload DGNDownload PDFModel NameRevision DateFile DescriptionSOST-01-1106/25Index and Notes for 50โ-130โ SpansSOST-02-1106/25Elevation Views for 50โ-75โ SpansSOST-03-1106/25Elevation Views for 80โ-100โ SpansSOST-04-1106/25Elevation Views for 105โ-115โ SpansSOST-05-1106/25Elevation Views for 120โ-130โ SpansSOST-06-1106/25Support Base and DMS Electrical Access Details for 50โ-100โ SpansSOST-07-1106/25Support Base and DMS Electrical Access Details for 105โ-130โ SpansSOST-08-1106/25Gusset Plate ConnectionsSOST-09-1106/25Truss Support and Chord Splice Details for 50โ-100โ SpansSOST-10-1106/25Truss Support and Chord Splice Details for 105โ-130โ SpansSOST-11-1106/25 Sign Attachment DetailsSOST-12-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-13-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-14-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-15-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-16-1106/25Dynamic Message Sign Runway and Ladder DetailsSOST-17-1106/25Foundation Details - Non-stagedSOST-18-1106/25Conduit Location DetailsSOST-19-11 -SOST-21-1106/25Foundation Details - Stagedโคข Back to top Roadside Dynamic Message Sign SupportDownload DGNDownload PDFModel NameRevision DateFile DescriptionRDMS-01-1312/21Index and Notes for D.M.S. Sign SupportRDMS-02-1303/19Support Frame DetailsRDMS-03-1303/19Work Platform DetailsRDMS-04-1304/20Support Post Base DetailsRDMS-05-1303/19Footing DetailsRDMS-06-1303/19Rotational Viewโคข Back to top Contact Bridge Methods Email Address Bridge.Methods@iowadot.us For inquiries regarding the Bridges and Structures Bureau Design Manual, Standards, and CADD workflows. Back to top Secondary Navigation Menu Bridge & Culvert Standards Bridge Standards County Bridge Standards LRFD Culvert Standards LRFD Precast Culvert Standards Pedestrian Tunnel Standards Sign Support Structure Standards
Bridge Links & Resources View the CADD bridge standard plan files and design manual and commentary disclaimer
Bridge Methods Email Address Bridge.Methods@iowadot.us For inquiries regarding the Bridges and Structures Bureau Design Manual, Standards, and CADD workflows.
Bridge Methods Email Address Bridge.Methods@iowadot.us For inquiries regarding the Bridges and Structures Bureau Design Manual, Standards, and CADD workflows.
