Class II Weathered Steel Bridge Replacement

Class II Weathered Steel Bridge Replacement

Replace an existing, failing foot bridge along the Prairie Creek Trail in Prairie Creek Redwoods State Park to allow for safe, continued, public access to, and along this trail. The new bridge will be located 10 feet to the south of the existing bridge and will be longer, to allow for construction outside of the stream bed. Work will: • Set up tarps beneath the existing structure to capture falling debris; • Attach rigging to surrounding trees to assist in the removal and placement of materials; • On either side of the creek, excavate to install 10 foot long, 3 foot deep and 10-inch-high concrete (rebar reinforced) mud sills; • Excavate for four (4) 25 feet long by 1 foot wide by 6 inches deep footings on either side of the creek to construct ramp approaches at either end of the bridge for an even linear grade trail alignment; • On the east (left) bank, excavate to install a 12 foot long by 3 foot deep by 2-foot-high cribbed abutment to level the bridge site; • Use the overhead rigging to lift the new stringers into place and attach decking and rails to the superstructure; • Remove and dismantle the old bridge, remove any hardware from untreated redwood and scatter the untreated redwood across the forest floor, out of view; and • Remove treated wood and the hardware from the site and dispose of at the maintenance yard and disassemble the rigging and pack out from the site.

Orick

Humboldt

Northern California

Humboldt