Each bridge must be bid separately because they have different funding sources. Bridge components must be delivered in the following sequence: all necessary hardware to assemble the bridge; precast concrete abutments with wing walls attached; Treated 4x12 wood planks for backwalls: concrete bridge planks; all the quick set grout needed to complete grouting all seams, voids and dowel holes. Timing for deliveries will be arranged once the bridge provider has been selected and as the contractor requests. Any questions about this bid should be directed to Lonnie Crumley, 360-470-0347 or by email: lwcrumley@centurytel.net. CBFTF reserves the right to reject any and all bids without cause. There are two project sites located on Geissler Road in Grays Harbor County, near the town of Montesano, WA. The two sites are in close proximity of each other accommodating a small ox-bow on Geissler Creek. The site requires two engineered, precast, pre-stressed, concrete bridges with load ratings of HL-93. Both bridges will be on opposite skews to accommodate the stream crossing. Both bridges will require epoxy coated rebar on the outside planks to allow for poured-in-place 34-inch single slope concrete barriers. Bridge planks will be no wider than 29 inches to reduce weight. The bridge surface will be the road surface. Engineering plans will be sent to those providers expressing interest in bidding. All bids must be based off design plans that will be provided. Only bidders providing the complete bridge package listed in this request and are able to meet the strict delivery dates will be considered. Bridge specifications . Bridge Plank Units: One bridge dimension will be will be 44 ft. x 30 ft. x 18 inches. The other bridge dimension is 48 ft. x 30 ft. x 18 inches. Each bridge will be made up of precast, pre-stressed concrete, voided planks 29 inches wide to allow for grouting. All planks shall be per WSDOT specifications with the exception that the manufacturing plant does not need to be PCI Certified as long as the plant has certified quality control personnel. Four-inch diameter holes must be centered at each end of each plank to accommodate a #8 rebar dowel pin as per design plans to connect with precast concrete abutments. Outside planks must have epoxy coated rebar cast into them to accommodate a 34-inch-high single slope concrete curb rail that will be poured in place by contractor; all specifications will be provided to those interested in bidding. Each outside bridge plank will have a Burke Ferrule Loop insert or approved equal on no greater than 8 ft. intervals to accommodate utility conduits. All lifting apparatuses must accommodate a clevis large enough to safely lift plank weight or lifting devices must be provided at delivery. If lifting apparatus is counter sunk the depression must be large enough to accommodate a clevis. . Concrete Curb Railing: Will be cast in place on site by the contractor. Curb railings will be 34 inch high single slope concrete barriers constructed as per WSDOT specifications. Precast Concrete Abutments with wing walls: For each bridge there will be two precast concrete abutments 2 ft. wide, 2 feet deep, with attached wing-walls. The spacing between the wing walls is 30ft. 1 in. Each wing wall will extend out 4 ft. from the end of the abutment on each side and will be 3 ft. 7 inches high measured from the bottom of the abutment, details provided on plans. For one bridge a 24 inch wide by 31 feet long, 3/8 inches thick, steel plate with anchor studs is to be cast into the bottom of each abutment to allow welding to the H pile. For the other bridge the steel plate will be 33 feet long. Must refer to engineer drawings for clarity. Different length steel plating is due to different skews for each bridge. . Hardware: Supplier is to provide grout, rebar dowels, lumber and any miscellaneous hardware to assemble each bridge including steel plates and angle iron for attaching the abutment to the steel piling. Timber Bulkheads: Supplier will provide treated 4 X 12 timbers to be used for bulkheads on the back of H-piles including the welded bulkhead braces and the 6-inch by inch bolts with nuts and washers to attach to piles and 3 -inch by inch bolts with nuts and washers for attaching timber bulkheads to the wingwalls. . Minor Bridge Items: Supplier will provide minor bridge items such as butyl rubber sheeting, pre-molded compressible backer rods and 2x2 wood boards. . Engineering: Supplier to provide engineering design calculations & drawings stamped by a Washington State licensed engineer for the bridge planks.
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