chapter 22. road planning and design manual. bridges and retaining walls. june 2006 iv. 22. list of tables. table 22.1 typical bridge spans. 3. list of figures. figure 22.2.3 (a) beam bridges. 3. figure 22.2.3(b) beams can be i or t shaped. 4. figure 22.2.3(c) suspension bridge cable stayed bridge.