Construction of a Portable Skidder Bridge
Portable Skidder Bridges are wooden structures engineered and intended for temporary use for crossing streams by loggers, foresters, and landowners. They are reusable and last from three to five years if properly installed, used, and removed. Using a skidder bridge during timber harvests eliminates direct access through a waterway, which minimizes streambank and streambed disturbance, soil erosion and sedimentation. Bridges are typically placed well above the flow of water therefore provide suitable passage for aquatic species such as brook trout.
The bridges are constructed of green hemlock, and reinforced with ¾” threaded steel rod and 10” log cabin screws. Each bridge is made up to three panels measuring 20’ long and 4’ wide.
Portable Skidder Bridges can be rented from many Conservation Districts across Vermont, including the Winooski Conservation District for a monthly fee of $100 (with a $100 deposit). Click here for more information on renting a bridge.
The images below show the construction of a Skidder Bridge: