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Types
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Stayed
Deck Girder/Truss
Girder
Truss
Timber
Steel
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Covered Bridges

Types

Deck Truss

Deck truss bridges are supported by two or more longitudinal trusses. Decks are supported on top of the trusses and are usually timber (sawn or glued laminated), but may be concrete, steel, or fiberglass.

Timber Truss

Typical span 50 to 80 feet

Example sketch of a timber truss
Photo of a deck truss
ROS Classes: black from U to R to RN to SPM, gray from SPM to SPNM, white from SPNM to P

Steel Truss

Typical span 50 to 100 feet

Additional Pictures:

Example sketch of a steel deck truss
Photo of a Steel Deck Truss Photo of a Steel Deck Truss
ROS Classes: black from U to R to RN, gray from RN to SPM, black from SPM to SPNM to P

Fiberglass Truss

Typical span 50 to 80 feet

Example sketch of a fiberglass deck truss
Photo of a Fiberglass Deck Truss
Photo of a fiberglass deck truss
ROS Classes: black from U to R to RN, gray from RN to SPM to SPNM to P