USDA, Coconino National Forest, 2323 E. Greenlaw Lane, Flagstaff, AZ 86004-1890

E -- PEDESTRIAN BRIDGE, SUPPLY AND DELIVER SOL RFQ-R3-04-98-14 DUE 070298 POC Carol Hollis 520-527-3543/Contracting Officer Yolanda Mitchell, 520-527-3540 This modification adds characteristics of design to RFQ-R3-04-98-14 as follows: (vi) These characteristics are based on the "CAPSTONE" as designed and fabricated by STEADFAST BRIDGES, Fort Payne, AL. These characteristics are used to establish "or equal" criteria. WIDTH -- Inside clear width -- -6 feet; SPAN -- Center to center of bearing -- -130 feet, no part of the superstructure to extend below a straight line drawn from abutment to abutment; PIECES -- Bridge to be delivered in three sections of approximately equal length; CAMBER -- Cambered to offset dead load and appear flat; Load -- Evenly distributed live load of 85 psf; WIND -- Minimun of 30 psf (approx. 120 mph); TEMPERATURE -- Accommodate a temperature differential of 120 degrees F; DEFLECTION -- Vertical deflection due to pedestrian live load shall not exceed 1/400th of span length; MATERIALS -- Sturctural metal to unpainted weathering steel in accordance with ASTM A242 or ASTM A588 steel for plates and structural shapes and ASTM A606 or ASYM A847 for tubular sections. Minimum yield (Fy) shall be greater than 50,000 psi, Structural members to have minimum thickness of 3/16", Wood decking to be transverse to bridge longitudinal axis and be No. 1 grade Southern Yellow Pine or equal. Wood shall be treated to a minimum of 0.40 lbs. of CCA preservative per cubic foot of wood. Planks to be 2"x10" nominal. Filed splices to be bolted with high Strength ASTM A325 bolts, type 3 for weathering steel.; FABRICATION -- Bridge Fabrictor shall be certified by the American Institute of Steel Construction. All workmanship to be in accordance with AASHTO. Welding operators shall be properly accredited and experienced. All welding shall utilize E70 or E80 series electrodes. The weld process used shall be Flux Core Arc Welding (FCAW) or Shielded Manual Arc Welding (SMAW).; RAILINGS -- All railing shall meet the requirements of the Americans with Disabilities Act. Railing size -- 1 1/4" to 1 1/2", Wall to rail space -- 11/2", Railing alcove depth (max) -- 3", Railing alcove height (max) 18", Railing height -- 34" to 38"; Handrails must be nonabrasive. Ends of handrails must be rounded or must return to a wall or post. Handrails must extend past the maximum grade segments of stairs at all landings. Handrails must be continuous. Handrails must not rotate in their fittings. DRAWINGS -- Successful bidder to supply the government two complete sets of shop drawing within ten (10) days of award. (0148)

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