1_FR 914A TEMP BRIDGE_Statement of Work - needs pictures of pick up pt and install pt.pdf

Statement of Work

Load, deliver, and install a government supplied, 50’ temporary bridge and wooden abutments from

Black Mountain storage site off FR 86 to FR 914A Hacking Run Road near Richwood, WV. Bridge shall be set to span stream with final grade of deck set 1 ft – 1.5 ft above the existing road grade on each side of the stream. Installation shall include furnishing materials, equipment, and labor to construct stone (est.

of 100 -150 tons of 1 ½” agg.) approaches at each end of structure, blending bridge elevation to existing road elevation.

Bridge weights approx. 30,000 lbs.

Pick-up: 38° 18' 21.568"N 80° 12' 14.516"W

Install: 38° 20' 30.588"N 80° 22' 26.974"W

Photos of the pick-up location at Black Mountain Storage Yard.

Photos of the placement location on FR 914A – Hacking Run A.

Bridge will be set to span existing stream channel.

Notes:

Contract cost to include all incidentals such as traffic control, haul permits (if needed), etc.

Contract cost to include all incidentals with placing bridges on two 12”x12” oak timbers on each end of the bridge and setting of an additional 12"x12" oak timber as back wall at each end of bridge. Timbers are government supplied materials, to be picked up by the contractor at the Black Mountain Storage area, with the bridge structure.

Contractor shall take care not to damage the temporary bridge during removal, transport, and installation of the temporary bridge.

Contractor will clear small trees and brush from road prism directly under and within 10 ft of the structure plus 8 ft width on east side and on the west side of the new structure, starting at the west bridge abutment and continuing along the existing road prism as needed to blend new bridge grade into existing road prism at no greater than 4% grade (100 ft min. length). All woody vegetation shall be removed from 8 ft behind existing ditch lines to 8 ft below top of fill and disposed of onsite, as directed by the COR. The contractor shall supply and install, by sound welding practice, ¼” steel plating for fill plate at each end of Bridge. A total of 4 plates shall be installed and each shall be approximately 6” wide by 5 ft long. The Contractor shall construct and compact an aggregate approach ramp on each end of the bridge. Approaches shall be constructed to provide a smooth transition from the existing road grade to the new bridge surface elevation and shall have a minimum width of the bridge deck plus 1 ft on each side. Compaction by vibratory roller shall be required for all placed aggregate. Aggregate shall be placed in lifts (compacted thickness not to exceed 6 inches each), all compaction equipment shall be approved/verified to meet compaction needs, by COR, compaction will be verified by visual inspection.

Final bridge grade to be 12 inches (min). to 18 inches (max.) above the existing road elevations at abutment locations and set to minimize grade on structure while providing smooth transitions on and off the structure.

Contractor will repair all damage to surface of FR 914, caused by the processes involved in moving the structure to its final location. Final road condition shall be equal to or better than condition of roadway prior to start of project. All materials, equipment, and labor required to perform any required work shall be incidental to line item 001, “load, haul, deliver, and install 50’ temp. bridge”.