Gardner, Matthew

Louisos, Jessica

MacBroom, James

Schiff, Roy

English

ScholarWorks@UMass Amherst

University of Massachusetts AmherstScholarWorks@UMass AmherstInternational Conference on Engineering andEcohydrology for Fish PassageInternational Conference on Engineering andEcohydrology for Fish Passage 2016Jun 22nd, 11:00 AM - 11:15 AMStream Crossings II: Bridges, Culverts, FloodResiliency, and ConnectivityRoy SchiffMilone and MacBroomJames MacBroomMilone and MacBroomJessica LouisosMilone and MacBroomMatthew GardnerMilone and MacBroomFollow this and additional works at: https://scholarworks.umass.edu/fishpassage_conferenceThis Event is brought to you for free and open access by the Fish Passage Community at UMass Amherst at ScholarWorks@UMass Amherst. It hasbeen accepted for inclusion in International Conference on Engineering and Ecohydrology for Fish Passage by an authorized administrator ofScholarWorks@UMass Amherst. For more information, please contact scholarworks@library.umass.edu.Schiff, Roy; MacBroom, James; Louisos, Jessica; and Gardner, Matthew, "Stream Crossings II: Bridges, Culverts, Flood Resiliency, andConnectivity" (2016). International Conference on Engineering and Ecohydrology for Fish Passage. 20.https://scholarworks.umass.edu/fishpassage_conference/2016/June22/201Fish Passage 2016 – International Conference on River Connectivity | June 22, 2016Bridges, Culverts, Flood Resiliency,and ConnectivityPresented ByRoy SchiffJames MacBroomJessica LouisosMatthew Gardner2Undersized Culverts69%21%8%2% 3%01,0002,0003,0004,0005,0006,000<50 50-75 75-100 100-125 >125Number of CulvertsCulvert Size (% of Bankfull Channel Width)Culvert Sizes(~7,500 VT culverts)3Undersized Culverts4Recent VT Design Guidance & State Standards(Schiff et al., 2014)5.The Clear Flow Fairy TaleThe Large Wood and Sediment Reality6The Scary Part of Reality7Undersized Bridges8Large Wood at BridgesGreat BrookBrook Road in Plainfield, VT7/19/2015Photo taken by B. TowbinGreat BrookBrook Road in Plainfield, VT5/27/2011Photo taken by G. Springston9June 25, 2015 July 21, 2015UVM Large Woody Debris Study(O’Neil-Dunne and Ahles, 2015)10UVM Large Woody Debris Study(O’Neil-Dunne and Ahles, 2015)11Poor Bridge AlignmentRoaring BrookUS Route 4 in Killington, VTPhoto by Lars Gange & Mansfield Heliflight, August 31, 2011)12 Chris Cornog13MA Culvert Vulnerability Screening(MMI, 2016)      Specific Stream Power versus Bed ResistanceSilt Sand Gravel Cobble Boulder Bedrock0-60 3 3 2 3 4 460-100 3 3 0 1 3 3100-300 3 2 0 0 2 2300+ 2 1 0 0 1 2                                                  Dominant Particle Size (Bed Resistance)Specific          Stream            Power          (W/m2 )               14MA Culvert Vulnerability Screening(MMI, 2016)15MA Culvert Vulnerability Screening(MMI, 2016)16Geomorphic CompatibilityPrepared May 2016GC STRAOP CStructure ConditionAquatic OrganismPassage CriticalityDraft Culvert Scoring System (V.5)Moderate Risk High Risk Highest RiskRiskRiskLow RiskLowest RiskRisk Icon ExamplesVariable Base Screen Enhanced ScreenGC  (Geomorphic Compatibility)NH Geomorphic Compatibility (NHGS) GC + Specific Stream Power and Approximate Bed ResistanceSTR  (Structure Condition)Structural Condition STR + Approximate Hydraulic Capacity (TU/SNHPC) AOP  (Aquatic Organism Passage)NH Aquatic Organism Passage Screen (TU/SNHPC)AOP + Fisheries Prioritization (NHFG)C  (Criticality) NHDOT Road Class Road Class + Public Safety Proximity + Locally important conditions (for locally enhanced screen)R  (Risk) R = f(GC, STR, C) R = f(GC, STR, C)RiskRiskNH Draft Screen17NH Draft Screen ResultsFloodVulnerability  Potential (V)Inundation (VI)Erosion (VE)LowHigh(2%)(10%)(1%)(2%)Flood Vulnerability Types(and typical  flood recurrence intervals)Likely Asset Failure Mode(1%)Vulnerability = �I,E,DVROAD SEGMENT = �I,E,D VEMBANKMENT + VBRIDGES + VCULVERTSwhere I = inundation, E = erosion and D = deposition(10%)Deposition (VD)(1%)(2%)(10%)10987654321Complete FailureTemporary  FailureFull ClosurePartial ClosureVT Road Vulnerability AssessmentFormer culvertNew culvert(MMI, 2015)THANK YOU.HIGH RESILIENCY = HIGH CONNECTIVITY

Stream Crossings II: Bridges, Culverts, Flood Resiliency, and Connectivity

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Stream Crossings II: Bridges, Culverts, Flood Resiliency, and Connectivity

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