(2023) Research Solutions - Advanced steel offers cost-savings for Iowa's bridges - TR-779. Transportation, Department of
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Iowa DOT Research Solutions - TR-779 - Evaluation of A709 Grade 65 QST Bridge Steel.pdf File Size:434kB |
Abstract
Steel girders, which are commonly used in Iowa bridges, are made with various types and grades of steel. An advanced, high-strength steel used in vertical buildings was adopted into national standard bridge specifications in 2018. Iowa’s Buchanan County became the first in the nation to build a short-span bridge with the improved material. Live-load tests over three years and thorough laboratory testing demonstrated the economic and structural advantages that Iowa DOT and county engineers could realize as the steel grade becomes more widely available.
| Item Type: | Departmental Report |
|---|---|
| Note: | Please see Final Report and Tech Brief: https://publications.iowa.gov/41872/ |
| Keywords: | A709 Grade 65 QST girders—bridge steel evaluation—laboratory testing—live load testing—material cost savings—Sand Creek Bridge—steel beam strength |
| Subjects: | Transportation Transportation > Bridges and tunnels Transportation > Research Transportation > Design and Construction |
| ID Code: | 45572 |
| Deposited By: | Iowa DOT Research |
| Deposited On: | 23 Aug 2023 13:35 |
| Last Modified: | 23 Aug 2023 13:35 |
| URI: | https://publications.iowa.gov/id/eprint/45572 |