General Information
Figure 1 shows a two-lane road beam bridge.
![Beam bridge over a river](bridges/beam-bridges/bridge-1/1-beam-bridge.jpg)
Main span | ≅ 20 m |
Girder | Prestressed concrete beam |
Piers and Bents
Figure 2 shows a side view of a bridge sector.
![Beam bridge with different superstructure support types](bridges/beam-bridges/bridge-1/2-beam-bridge.jpg)
There are two types of superstructure supports: A and B. Type B appears only once. Supports type A and B are shown in figures 3 and 4, respectively.
![Beam bridge: single column pier](bridges/beam-bridges/bridge-1/3-single-column-pier.jpg)
Support type A consists of a single column pier and a pier cap; the foundation consists of a pile cap and piles.
![Three-column bent and bent cap with two units](bridges/beam-bridges/bridge-1/4-column-bent.jpg)
Support type B consists of a three-column bent—the central column is shorter—and a bent cap, which is made of an upper and a bottom unit. The foundation of each column consists of a pile cap and piles.