The strongest truss for cantilevering objects is the octet-truss, however you could possibly gain more efficiency using a lorimerlite framework which should only be used to hold up objects from beneath carrying only compression however it depends how high the bridge needs to be suspended in relation to the size of the gap it must bridge.
the golden gate bridge
an arch bridge
Tacoma narrow bridge.
The strongest part of a bridge is typically the foundation or base, as it supports the weight of the entire structure. In some cases, the trusses or beams of the bridge may also contribute to its overall strength.
suspension bridge
cable
The strongest bridge type is generally considered to be the cable-stayed bridge. It is known for its ability to span long distances and support heavy loads by using cables connected to towers to distribute the weight efficiently.
it is the largest bridge in san francisco
The biggest and strongest bridge ever!
an arched birgde is the strongest type of brigde
no it is not a combination of bridge types
it is a flat joint