1. Bridge repair needed. Abutment 1: Piles 1, 3, 4, 5 have rotten section loss. Repair: Excavate earth 1’-2” depth by 1’-4” wide by 24’-0” in length. Form and pour 3000 psi concrete footing with (2) 5/8” dia rebar running the length of footing, and ½ dia rebar 1’-0” on center the width. Leave old piles in place. Add new 12” creosote treated timber piles next to old piles from top of concrete footing to bottom of timber cap. Bent 2: Pile 5 needs to be replaced. Repair: Add sister pile with 12” min diameter treated timber pile, form and pour 4’x 4’ x 2’ thick footing. The top of the footing must be at existing ground level. #5 bars 1’-0” on center each way. 3000 psi concrete. New creosote timber sister pile shall extend 1’-0” into concrete footing and have full contact with timber cap. Bent 4: Pile 5 has two rotten section loss areas. Repair: Add sister pile with 12” min diameter treated timber pile, form and pour 4’x 4’ x 2’ thick footing. The top of the footing must be at existing ground level. #5 bars 1’-0” on center each way. 3000 psi concrete. New creosote timber sister pile shall extend 1’-0” into concrete footing and have full contact with timber cap. Bent 5: Cross bracing is rotten and pile 4 is not centered under cap. Repair: Replace cross bracing. Re center pile. Abutment 6: Pile 1, 2, 5 Has rotten sections and voids. Repair: Excavate earth 1’-2” depth by 1’-4” wide by 24’-0” in length. Form and pour 3000 psi concrete footing with (2) 5/8” dia rebar running the length of footing, and ½ dia rebar 1’-0” on center the width. Leave old piles in place. Add new 12” creosote treated timber piles next to old piles from top of concrete footing to bottom of timber cap. Deck Spans 2 deck board 6 and 17 are rotten. (3.5” deep x 10” wide x 17” length.) Repair: Replace board 6 & 17 and replace 10 more boards. (creosote treated) Super Structure: Span # 1, Beams #3 and #11 have rotten section loss. (7” x 14” x 21’) Replace: Beam #3 (creosote treated) Replace Bean #11 (creosote treated) Cross Bracing: Replace cross bracing on Bent 2 thru 5 with 3” x 10” creosote treated timber, per GDOT construction detail 830.12 *The contractor is responsible for coordinating the work with CSX Railroad for track safety. *The contractor is responsible for maintaining a utility locate.
