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Types
Cable
Suspension
Timber Towers
Concrete Towers
Steel Towers
Without Stiffening Truss
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Covered Bridges

Types

Cable

Suspension

Cable suspension bridges are supported by two main steel cables. The deck is hung from suspender cables or steel rods. Decks are usually sawn timber planks. The cables are anchored into the streambanks and are supported by intermediate towers.

Longer span cable suspension bridge are usually designed with a stiffening truss. The stiffening truss supports and stiffens the deck. Bridges with spans shorter than 120 feet are often designed without the stiffener truss.

Stiffening trusses can be designed to carry dead loads and construction loads at sites where trusses can be supplied and installed in one piece. Cables are then added to carry live loads.


Example sketch of a suspension bridge

Timber Towers

Typical main span 80 to 200 feet

Additional Pictures:

Photo of a Cable Suspension with Timber Tower Photo of a Cable Suspension with Timber Tower
ROS Classes: black from U to R to RN to SPM to SPNM, gray from SPNM to P

Concrete Towers

Typical main span 80 to 400 feet

Additional Pictures:

Photo of a Cable Suspension with Concrete Towers
ROS Classes: black from U to R to RN to SPM, gray from SPM to SPNM, white from SPNM to P

Steel Towers

Typical main span 80 to 400 feet

Additional Pictures:

Photo of a Cable Suspension with Steel Towers
ROS Classes: black from U to R to RN, gray from RN to SPM, white from SPM to SPNM to P

Suspension Without Stiffening Truss

Typical main span 80 to 120 feet

Additional Pictures:

Example sketch
Photo of a Cable Suspension Without Stiffener Truss Photo of a Cable Suspension Without Stiffener Truss
Cable suspension bridge without stiffening truss
ROS Classes: black from U to R to RN to SPM to SPNM, gray from SPNM to P