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Home My WebLink AboutMap_Critical_Areas_Maps_TRIP_CA_171128_v1ATTACHMENT 4 – CRITICAL AREAS MAPS ! ! ! ! ! ! ! ! ! ! ! ! ! §¨¦405 UV169 I-405 SouthboundWiden bridge structureover Cedar River Renton AveReconstruct bridge structure Cedar AveReconstruct bridge structure NorthernProjectLimitN 4 th S t N 4 th S t W i l l i a m A v e S W e l l s A v e S N 2nd St M aple Valley H w y NE3rdSt M a i n A v e S S 7th St Beacon W ay S I-405 MainlineConstruct one new lanein both the southboundand northbound directions I-40Construct one new lane inboth the southboundand northbound directions B r o n s o n W a y N MP 3.2 MP 3.3 MP 3.4 MP 3.5 MP 3.6 MP 3.7 MP 3.8 MP 3.9 MP 4.0 MP 4.1 MP 4.2 !Mile Post (MP) Existing Right of Way Muncipality Wetland BoundaryWettland Buffer BoundaryStream Boundary Estimated Stream CenterlineStream Buffer Boundary Aquifer Protection Area Zones Zone 1Zone 2 / 0 500 Feet 4a. I-405, Tukwila to Renton Improvement Project, Stage 3 Aquifer Protection Areas TUKWILA RENTON§¨¦405 UV169§¨¦5 SEATAC 1 2 UV167 3 Legend ! ! ! ! ! ! ! ! ! ! ! ! ! §¨¦405 UV169 I-405 SouthboundWiden bridge structureover Cedar River Renton AveReconstruct bridge structure Cedar AveReconstruct bridge structure NorthernProjectLimitN 4 th S t N 4 th S t W i l l i a m A v e S W e l l s A v e S N 2nd St M aple Valley H w y NE3rdSt M a i n A v e S S 7th St Beacon W ay S I-405 MainlineConstruct one new lanein both the southboundand northbound directions I-40Construct one new lane inboth the southboundand northbound directions B r o n s o n W a y N MP 3.2 MP 3.3 MP 3.4 MP 3.5 MP 3.6 MP 3.7 MP 3.8 MP 3.9 MP 4.0 MP 4.1 MP 4.2 TUKWILA RENTON§¨¦405 UV169§¨¦5 SEATAC 1 2 UV167 3/ 0 500 Feet 4b. I-405, Tukwila to Renton Improvement Project, Stage 3 Flood Areas Legend !Mile Post (MP) Existing Right of Way Muncipality Shoreline FEMA 100-Year Floodplain FEMA 500-Yr Floodplain FEMA Floodway ! ! ! ! ! ! ! ! ! ! ! ! ! §¨¦405 UV169 I-405 SouthboundWiden bridge structureover Cedar River Renton AveReconstruct bridge structure Cedar AveReconstruct bridge structure NorthernProjectLimitN 4 th S t N 4 th S t W i l l i a m A v e S W e l l s A v e S N 2nd St M aple Valley H w y NE3rdSt M a i n A v e S S 7th St Beacon W ay S I-405 MainlineConstruct one new lanein both the southboundand northbound directions I-40Construct one new lane inboth the southboundand northbound directions B r o n s o n W a y N MP 3.2 MP 3.3 MP 3.4 MP 3.5 MP 3.6 MP 3.7 MP 3.8 MP 3.9 MP 4.0 MP 4.1 MP 4.2 TUKWILA RENTON§¨¦405 UV169§¨¦5 SEATAC 1 2 UV167 3/ 0 500 Feet 4c. I-405, Tukwila to Renton Improvement Project, Stage 3 Steep Slopes Legend !Mile Post (MP) Existing Right of Way Muncipality >90% Steep Slopes >15% & <=25%>25% & <=40%>40% & <=90% ! ! ! ! ! ! ! ! ! ! ! ! ! §¨¦405 UV169 I-405 SouthboundWiden bridge structureover Cedar River Renton AveReconstruct bridge structure Cedar AveReconstruct bridge structure NorthernProjectLimitN 4 th S t N 4 th S t W i l l i a m A v e S W e l l s A v e S N 2nd St M aple Valley H w y NE3rdSt M a i n A v e S S 7th St Beacon W ay S I-405 MainlineConstruct one new lanein both the southboundand northbound directions I-40Construct one new lane inboth the southboundand northbound directions B r o n s o n W a y N MP 3.2 MP 3.3 MP 3.4 MP 3.5 MP 3.6 MP 3.7 MP 3.8 MP 3.9 MP 4.0 MP 4.1 MP 4.2 TUKWILA RENTON§¨¦405 UV169§¨¦5 SEATAC 1 2 UV167 3/ 0 500 Feet 4d. I-405, Tukwila to Renton Improvement Project, Stage 3 Geologic Hazard Areas Legend !Mile Post (MP) Existing Right of Way Muncipality Erosion Hazard Area Seismic Hazard Area Moderate HazardHigh HazardVery High Hazard Moderate HazardHigh Hazard Landslide Hazard Areas Coal Mine Hazard Areas