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Bee Branch Creek Railroad Culverts Project Presentation and Video Copyrig hted November 16, 2020 City of Dubuque Action Items #4. City Council Meeting ITEM TITLE: Bee Branch Creek Railroad Culverts Project Presentation and Video Update SUMMARY: Steve Brown, Engineering Project Manager, and Deron Muehring, Civil Engineer I I, will present an update of the Bee Branch Creek Railroad Culverts Project. Media Services will show a video update of the P roject. SUGGESTED Receive and File; Video Presentation Suggested Disposition: DISPOSITION: ATTACHMENTS: Description Type Bee Branch Railroad Culverts Project Update Supporting Documentation Bee Branch Railroad Culverts Project Monday, November 16, 2020 Engineering Department 2 Overview ▪History and Impact of Flooding in the Bee Branch ▪Bee Branch Watershed Flood Mitigation Project ▪Phases ▪Funding ▪Bee Branch Railroad Culvert Project ▪It's Importance ▪Project Challanges ▪Status 3 Bee Branch Watershed ▪6.5 square miles ▪50% Dubuque citizens live or work within the Bee Branch watershed 4 ▪1,150 Homes/ Businesses at Risk of Flooding ▪1,370 Homes/ Businesses at Risk of Flooding 5 History of Flooding Presidential Disaster Declaration: May 21, 1999 Disaster #1277 Reason for Declaration Flooding, severe storms, tornadoes Cause of Damage 3 inches of rain in 1.5 hours Presidential Disaster Declaration: June 19, 2002 Disaster #1420 Reason for Declaration Flooding and storms Cause of Damage 4.9 inches of rain in 24 hours Presidential Disaster Declaration: June 2, 2004 Disaster #1518 Reason for Declaration Flooding, severe storms, tornadoes Cause of Damage 3.9 inches of rain in 48 hours Presidential Disaster Declaration: May 27, 2008 Disaster #1763 Reason for Declaration Flooding, severe storms, tornadoes Cause of Damage 15.7 inches of rain in 2 months Presidential Disaster Declaration: August 14, 2010 Disaster #1930 Reason for Declaration Flooding, severe storms, tornadoes Cause of Damage 4.8 inches of rain in 12 hours Presidential Disaster Declaration: August 30, 2011 Disaster #4018 Reason for Declaration Flooding, severe storms, tornadoes Cause of Damage 10.2 inches of rain in 12 hours 6 Recent Weather Patterns ▪From 1999 to 2011, Dubuque witnessed three 100 -year storms ▪What was once considered the 100 -year event is now considered the 50-year event Frequency (Years) 24-Hr Rainfall Amounts (Inches) 1992 1 2013 2 50 5.73 6.54 100 6.36 7.65 500 -10.70 1 1992 Rainfall Frequency Atlas of the Midwest (Huff & Angel) 2 2013 NOAA Atlas 14, Precipitation-Frequency Atlas of the United States, Volume 8 “winter and spring precipitation . . . in the Midwest are projected to increase by up to 30% by the end of this century.”Climate Science Special Report: Fourth National Climate Assessment,Volume I (Easterling, D.R. et. al., 2018) "Precipitation is projected to increase in Iowa . In addition,extreme precipitation is projected to increase, potentially increasing the frequency and intensity of floods."Frankson, R., K. Kunkel, S. Champion, and J. Runkle, 2017: Iowa State Climate Summary. NOAA Technical Report NESDIS 149-IA, 4 pp. 9 Trending Weather Patterns ▪By the end of the 21st century, what was once considered the 100 -year event could be four times more likely to occur in any given year Frequency (Years) 24-Hour Rainfall Amounts (Inches) 19921 20132 21003 50 5.73 6.54 7.45 100 6.36 7.65 8.52 500 -10.70 11.20 1 1992 Rainfall Frequency Atlas of the Midwest (Huff & Angel) 2 2013 NOAA Atlas 14, Precipitation-Frequency Atlas of the United States, Volume 8 3 Projected based on 2018 Climate Science Special Report: Fourth National Climate Assessment, Vol. I (Easterling, D.R. et. al.) ~14% increase ~11% increase ~5% increase 10 ▪Reduce the volume of stormwater, ▪Slow the rate and timing of stormwater flow through the upper watershed, and ▪Increase safe stormwater conveyance through the flood-prone area. Bee Branch Watershed Flood Mitigation Project 11 ▪Prevent an estimated $582 million in damages over the 21st century. Bee Branch Watershed Flood Mitigation Project 12 Funded Flood Mitigation Improvements Cost Carter Road Detention Basin $1,076,315 West 32nd Street Detention Basin $4,158,589 Lower Bee Branch Creek Restoration $21,274,700 Historic Millwork District Complete Streets $7,977,311 Flood Mitigation Gate & Pump Replacement $17,091,000 * Upper Bee Branch Creek Restoration $60,995,000 * 22nd Street/Kaufmann Storm Sewer Capacity Improvements $8,771,000 * Bee Branch Creek Railroad Culverts $31,654,000 * 17th Street/W. Locust Storm Sewer Capacity Improvements $7,368,300 * North End Storm Sewer Capacity Improvements $1,400,000 * Flood Mitigation Maintenance Facility $5,550,000 * Water Plant Flood Protection $4,400,000 * Impervious Surface Reduction (Green Alleys)$57,420,000 * Bee Branch Healthy Homes $8,427,665 * Total Cost:$237,564,000 * Total Grant Funding: Total City Share: $163,015,016 $74,548,981 22nd Street/Kaufmann Storm Sewer Capacity Improvements (N. Main to Kane)$17,770,000 * 17th Street/W. Locust Storm Sewer Capacity Improvements (Bee Branch to Elm)$4,492,600 * 17th Street/W. Locust Storm Sewer Capacity Improvements (Heeb to Rosedale)$23,090,000 * Unfunded Flood Mitigation Improvements 13 Funded Flood Mitigation Improvements Cost Carter Road Detention Basin $1,076,315 West 32nd Street Detention Basin $4,158,589 Lower Bee Branch Creek Restoration $21,274,700 Historic Millwork District Complete Streets $7,977,311 Flood Mitigation Gate & Pump Replacement $17,091,000 * Upper Bee Branch Creek Restoration $60,995,000 * 22nd Street/Kaufmann Storm Sewer Capacity Improvements $8,771,000 * Bee Branch Creek Railroad Culverts $31,654,000 * 17th Street/W. Locust Storm Sewer Capacity Improvements $7,368,300 * North End Storm Sewer Capacity Improvements $1,400,000 * Flood Mitigation Maintenance Facility $5,550,000 * Water Plant Flood Protection $4,400,000 * Impervious Surface Reduction (Green Alleys)$57,420,000 * Bee Branch Healthy Homes $8,427,665 * Total Cost:$237,564,000 * Total Grant Funding: Total City Share: $163,015,016 $74,548,981 22nd Street/Kaufmann Storm Sewer Capacity Improvements (N. Main to Kane)$17,770,000 * 17th Street/W. Locust Storm Sewer Capacity Improvements (Bee Branch to Elm)$4,492,600 * 17th Street/W. Locust Storm Sewer Capacity Improvements (Heeb to Rosedale)$23,090,000 * Unfunded Flood Mitigation Improvements For every $1 invested by the City, almost $8 in flood damage will be avoided over the design life of the project. Bee Branch Creek Restoration 15 Comiskey Park Creek Restoration Alignment Study 16th Street Detention Basin In 2004 the alignment recommended by the citizen committee is adopted by the City Council. 16 16th Street Detention Basin Lower Bee Branch Project Limits Creek Restoration 17 Lower Bee Branch 18 Upper Bee Branch 19 16th Street Detention Basin Project LimitsUpper Bee Branch Railroad Culverts Bee Branch Creek Railorad Culverts Project 21 Railroad Culverts: The Need 22 1.7 inches of rain in 90 minutes in 2014​ (Between a 2-and 5-year event) Project Need Railroad Culverts 23 without Railroad Culvert Improvements with Railroad Culvert Improvements Project Need Railroad Culverts 24 Railroad Culverts: The Challenges Interstate Commerce Commission Termination Act of 1995: Alignment established in 2004 Avoid unreasonable interference with railroad operations 25 Railroad Culverts 2007 IC&E Railroad Negotiations with owners of the railroad 2008 DM&E Railroad 2010 CP Railroad 26 Railroad Culverts ▪Alignment established in 2013 Creek Restoration Through the Railroad Property 27 Railroad Culverts Property Acquisition Canadian Pacific B&M Properties & Storage, LLC HWY 151 & 61 Development LLC Robert Klauer (Dubuque Flooring & Furniture) Garfield (lower) Bee 28 Railroad Culverts Existing Infrastructure Existing Box Culverts Existing Bee Branch Existing RR Culverts 29 Railroad Culverts Proposed Infrastructure Proposed Culverts (Tunneled) Proposed Transition Structure Proposed Outfall Structure Proposed Box Culverts 30 Canadian Pacific •Permanent easement for existing box culverts and proposed tunneled culverts under CP tracks; •Permanent easement for hike/bike trail from Garfield Avenue to the existing box culverts; •Temporary construction easement through CP’s track ROW; •Temporary construction easement through CP’s existing parking lot, near their yard office; and •Temporary access easement along CP tracks from 16th Street to the site of the proposed improvements. Railroad Culverts Property Acquisitions 31 Evolution of Railroad Negotiations: Canadian Pacific ▪MOU (2012) -Service Agreement -Construction Agreement -Easement Agreements ▪Service Agreement (2012 and amended in 2015 & 2017) -Paid CP over $100,000 ▪License Agreement for Sanitary Sewer (August of 2015) -Paid CP $15,500 ▪Construction Agreement (2018) -Paid CP over $100,000 to date 32 Existing Box Culverts Condition Assessment: Comprehensive Inspection According to Strand/IIW, “the twin box culvert is in good condition with little to no signs of post-construction displacement. The structure appears suitable to continue to support the earth and rail loadings, convey stormwater, and provide passage for pedestrians and bicyclists if repurposed.” 34 Existing Box Culverts Feasibility of Dual Use: ADA Compliant Hike/Bike Path 35 ▪City required to utilize steel pipe with a welded joint versus a mechanical joint Railroad Culverts Engineering / Construction 36 Railroad Culverts Mechanical Joint 37 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 Railroad Culverts Engineering / Construction 38 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 but City can work anytime if more than 25 feet from the tracks Railroad Culverts Engineering / Construction 39 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 but City can work anytime if more than 25 feet from the tracks ▪City must stop tunneling activity under mainline tracks when in use. Railroad Culverts Engineering / Construction 40 Railroad Culverts Zone of Influence 41 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 but City can work anytime if more than 25 feet from the tracks ▪City must stop tunneling activity under mainline tracks when in use but only when tunneling within the zone of influence Railroad Culverts Engineering / Construction Stopping only required when the cutting edge is within mainline Zone of Influence 42 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 but City can work anytime if more than 25 feet from the tracks ▪City must stop tunneling activity under mainline tracks when in use but only when tunneling within the zone of influence ▪City restricted from utilizing certain, more cost -effective shoring methods Railroad Culverts Engineering / Construction 43 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 but City can work anytime if more than 25 feet from the tracks ▪City must stop tunneling activity under mainline tracks when in use but only when tunneling within the zone of influence ▪City restricted from utilizing certain, more cost -effective shoring methods Railroad Culverts Engineering / Construction Tight sheeting acceptable 25 feet from tracks 44 Restricted from utilizing certain, more cost-effective shoring methods. 45 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 but City can work anytime if more than 25 feet from the tracks ▪City must stop tunneling activity under mainline tracks when in use but only when tunneling within the zone of influence ▪City restricted from utilizing certain, more cost -effective shoring methods but only when within 25 feet of the tracks Railroad Culverts Engineering / Construction 46 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 but City can work anytime if more than 25 feet from the tracks ▪City must stop tunneling activity under mainline tracks when in use but only when tunneling within the zone of influence ▪City restricted from utilizing certain, more cost -effective shoring methods but only when within 25 feet of the tracks ▪CP requiring 4 weeks to review contractor submittals and change orders Railroad Culverts Engineering / Construction 47 ▪City can utilize steel pipe with mechanical joints ▪City prohibited from construction from November 15 to April 15 but City can work anytime if more than 25 feet from the tracks ▪City must stop tunneling activity under mainline tracks when in use but only when tunneling within the zone of influence ▪City restricted from utilizing certain, more cost -effective shoring methods but only when within 25 feet of the tracks ▪CP requiring 4 weeks to review contractor submittals and change orders Railroad Culverts Engineering / Construction CP approval only required on elements impacting railroad loading 48 Railroad Culverts Abandon 60” Storm Pipe From 19th St. 49 50 51 Railroad Culverts Progress Garfield Ave •Box Culverts 52 Railroad Culverts Progress •Launch Pit 53 Railroad Culverts Under the Railroad Tracks 54 Welcome to Dubuque Uncle Mole 55 Railroad Culverts Under the Railroad Tracks •Microtunneling 56 Railroad Culverts Progress •Steel Pipe on Site 57 Railroad Culverts Under the Railroad Tracks •Microtunneling 58 •Microtunneling 59 60 •Track Settlement Monitoring 61 Railroad Culverts Under the Railroad Tracks •Slurry Separation Plant 62 Railroad Culverts Watching Construction 63 Railroad Culverts Watching Construction ! 64 Railroad Culverts Project Cost Estimate (at award) Engineering & Design $3,596,200 Property Acquisitions $410,000 Construction $25,900,000 Construction Contingency $1,279,149 TOTAL $31,185,349 SOURCE AMOUNT1 SRF Loan2 $16,300,100 HUD CDBG National Disaster Resiliency Grant $11,689,400 State Flood Mitigation Program Sales Tax Increment $2,831,000 Stormwater Utility Fee Revenue $364,800 TOTAL $31,185,300 1Rounded 2Repaid using State Flood Mitigation Program Sales Tax Increment Final project cost expected to be completed at approximately $700,000 (~2%) over budget which would be covered using state sales tax increment funding. This does not include the paving of the hike/bike trail that is funded but not yet under contract. 65 Existing Box Culverts Dual Use: ADA Compliant Hike/Bike Path 66 Existing Box Culverts Feasibility of Dual Use: ADA Compliant Hike/Bike Path 67 Existing Box Culverts Feasibility of Dual Use: ADA Compliant Hike/Bike Path Flood Gate 68 500-Year Flood ~3 feet below damage elevation CONSTRUCTION UPDATE VIDEO Questions? THANK YOU