The different between suspension bridge and beam bridge are beam bridge are for short distance but suspension bridge for long distance. Beam bridge are used for highway passes and suspension bridge for wide waterway passes.

Danyang-Kunshan Grand Bridge is the longest beam bridge in the world and is approx 164.8 kilometres long.

beam and tunnel

An example of a beam bridge is Chesapeake Bay bridge-tunnel

Site: http://www.pbs.org/wgbh/buildingbig/bridge/index.html

beam bridge