Specifications include, but are not limited to: CULVERT ONE Culvert One is close to the park entry bridge, adjacent to a cedar stand, heading eastward on a commonly used field trail. Current culvert is crushed at both the inlet and the outlet. The outlet is ~80% plugged with sediment. 1. Replace damaged culvert with a 12” x 20’ high-strength culvert, wrapped in geo textile fabric, and embedded in 1.5” fractured stone. 2. Finish aggregate gravel will be applied to provide sufficient tread depth. Compaction of fill materials and finish aggregate material will be done. 3. Inlet side and outlet side will be graded to allow for slightly deeper depth of the new culvert. Rock headers, if required, will be gathered on site. 4. Remove and dispose of the old culvert. CULVERT TWO Culvert Two is approximately .25 mile from the park’s entry bridge. It is on the Connector Trail, just beyond the red barn. The trail here is approximately 10 feet wide. The current metal culvert is 30” x 20’. The culvert is rusted and corroded, causing water to run underneath the culvert. The concrete block header on the outlet side has partially collapsed. Due to the failing culvert and high rainfalls, the trail tread at both sides of the culvert has eroded, narrowing the trail width considerably. 1. Replace damaged culvert with 30” x 30’ high strength culvert, wrapped in geo textile fabric, embedded in 1.5” or greater fractured stone. 2. Finish gravel aggregate will be applied to sufficient depth in the ground to provide a smooth tread. Compaction of fill materials and finish aggregate material will be done. 3. Inlet side and outlet side will be graded sufficient to the lengthened culvert size. Rock headers for the inlet and outlet will be gathered on site, or brought if necessary. 4. Remove and dispose of old culvert.
