Cochran Road Over Deep Creek Bridge to Culvert Redesign Team Members: Cynthia Roby, Aria Scaggs, Vanessa Diaz-Guerrero Faculty Mentor: Dr. Jenna Jambeck BACKGROUND SITE PLAN HYDRAULIC ANALYSIS Sponsor/Client: EXISTING CONDITIONS ● Existing bridge constructed in 1940 to withstand a 25-yr storm ● Condemned in October 2018, road closure in October 2019 ● Original dimensions - 39 ft x 16 ft ● Location - 3448 Cochran Rd SW, Atlanta, GA ● Superstructure section loss - up to 100% ● Downstream blocked by trees and rip rap ● First 5 beams are starting to crush ● Foundation undermining ● Erosion and scour at wingwalls ● Retaining wall movement ● Erosion at both abutments Multi-Cell Reinforced Concrete Box Culvert Design: ● 100-Year Storm Event Design ● Design Peak Flow: 12.35 cfs ● Required Storage: 67,308 cuft CULVERT PROFILE BOX CULVERT PLAN COST BREAKDOWN GENERAL G-001 COVER SHEET G-002 GENERAL NOTES CIVIL C-101 EXISTING SITE CONDITIONS C-102 DEMOLITION PLAN C-103 SITE PLAN C-104 GRADING PLAN C-105 ROADWAY PLAN C-106 EROSION CONTROL PHASE I C-107 EROSION CONTROL PHASE II C-301 CULVERT PROFILE C-501 EROSION CONTROL DETAILS I C-502 EROSION CONTROL DETAILS II C-503 EROSION CONTROL DETAILS III C-504 CONSTRUCTION DETAILS I C-505 CONSTRUCTION DETAILS II C-506 CONSTRUCTION DETAILS III C-507 CONSTRUCTION DETAILS IV STRUCTURAL S-101 BOX CULVERT PLAN S-501 CULVERT REINFORCEMENT DETAIL S-502 DECK REINFORCEMENT DETAILS SHEET LIST