N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT N 12 NIOBRARA EAST & WEST PROJECT N 12 NIOBRARA EAST & WEST PROJECT 12 NIOBRARA EAST & WEST PROJECT 12 NIOBRARA EAST & WEST PROJECT 12 NIOBRARA EAST & WEST PROJECT 12 NIOBRARA EAST & WEST PROJECT US Army Corps of Engineers
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT PROJECT STAFF PROJECT STAFF PROJECT STAFF PROJECT STAFF Lead Lead e e e e ad Age ad Age A Age A Agenc Age Agenc ncy (U ncy (U y (U y (U (U.S. (U.S. .S. Arm .S. Arm A A rmy Cor rmy Cor y y Corps o Corps o p p s of En s of En f f Engin Engin g g inee inee eers ee ee eers rs) rs) ) ) • Matt Wray Matt Wray – – Project Manager Project Manager • John John Moeschen John John Moeschen Moeschen Moeschen • Paul Boyd Paul Boyd • John Garrison • John Garrison John Garrison John Garrison Third- Third- Third Third -Party Contractor (HDR Engineering, Inc.) -Party Contractor (HDR Engineering, Inc.) Party Contractor (HDR Engineering, Inc.) Party Contractor (HDR Engineering, Inc.) • Matt Pillard • Matt Pillard Matt Pillard Matt Pillard – EIS Manager EIS Manager EIS Manager EIS Manager • Dick Gorton Dick Gorton • Stephanie White/Theresa Baker/Ben Fisher • Stephanie White/Theresa Baker/Ben Fisher Stephanie White/Theresa Baker/Ben Fisher Stephanie White/Theresa Baker/Ben Fisher Slide 2
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT PURPOSE OF THI S MEETI NG PURPOSE OF THI S MEETI NG PURPOSE OF THI S MEETI NG PURPOSE OF THI S MEETI NG • Present the range of alternatives Present the range of alternatives Present the range of alternatives Present the range of alternatives • Discuss the screening process Discuss the screening process Discuss the screening process Discuss the screening process • Gather Gather your input on this process Gather Gather your input on this process our input on this process our input on this process • Seek input that will aid in screening Seek input that will aid in screening Seek input that will aid in screening Seek input that will aid in screening Slide 3
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT C C Corps’ Responsibilities Corps’ Responsibilities ’ R ’ R ibiliti ibiliti •Manage the National Environmental Manage the National Environmental Manage the National Environmental Manage the National Environmental Manage the National Environmental Manage the National Environmental Manage the National Environmental Manage the National Environmental Policy Act Process for this Project Policy Act Process for this Project Policy Act Process for this Project Policy Act Process for this Project •Administer the regulations of Administer the regulations of Administer the regulations of Administer the regulations of Sec S ti Sec S ti ecti ecti tion tion on 404 on 404 404 f Cl 404 404 f Cl 404 of Cl 404 of Cl 404 f Clean f Clean f Cl f Cl ean W ean W Water W Water W t A W W t A er A er A Act A t A t Act Slide 4
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT PROJECT PURPOSE AND NEED PROJECT PURPOSE AND NEED PROJECT PURPOSE AND NEED PROJECT PURPOSE AND NEED What is the purpose of the N 12 Project? What is the purpose of the N What is the purpose of the N What is the purpose of the N What is the purpose of the N-12 Project? What is the purpose of the N What is the purpose of the N What is the purpose of the N 12 Project? 12 Project? 12 Project? 12 Project? 12 Project? 12 Project? • Provide a reliable roadway • Safely accommodate current and future traffic y levels • Maintain regional transportation connectivity Why is the N Why is the N Why is the N- Why is the N- -12 Project needed? -12 Project needed? 12 Project needed? 12 Project needed? • Driven by flooding D i b fl di • Unreliable roadway, safety concerns, interruption in regional transportation connectivity regional transportation connectivity Slide 5
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT EI S SCHEDULE EI S SCHEDULE EI S SCHEDULE EI S SCHEDULE Slide 6
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT GENERAL CONCEPTS GENERAL CONCEPTS GENERAL CONCEPTS GENERAL CONCEPTS • Roadway Alignments in the Missouri Roadway Alignments in the Missouri Roadway Alignments in the Missouri Roadway Alignments in the Missouri River Floodplain River Floodplain • Roadway Alignments not in the Missouri Roadway Alignments not in the Missouri Roadway Alignments not in the Missouri Roadway Alignments not in the Missouri River Floodplain River Floodplain • Mainstem Mainstem Mainstem System Regulation Changes Mainstem System Regulation Changes System Regulation Changes System Regulation Changes (Flushing, Dam Removal) (Flushing, Dam Removal) • Lewis and Clark Lake Sediment Removal Lewis and Clark Lake Sediment Removal Lewis and Clark Lake Sediment Removal Lewis and Clark Lake Sediment Removal Slide 7
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT ARE THE CONCEPTS REASONABLE? ARE THE CONCEPTS REASONABLE? ARE THE CONCEPTS REASONABLE? ARE THE CONCEPTS REASONABLE? • Roadway alignments are reasonable Roadway alignments are reasonable • Reservoir regulation changes not reasonable reasonable – Flows dependent upon adequate quantity of water and downstream conditions – Conflicts with management goals for some of the Conflicts with management goals for some of the authorized purposes – Congressional approval and review for impacts to other authorized purposes authorized purposes • Sediment removal not reasonable – Dredging every year for lifespan of roadway Dredging every year for lifespan of roadway – High cost compared to other concepts Slide 8
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT RANGE OF ALTERNATI VES RANGE OF ALTERNATI VES RANGE OF ALTERNATI VES RANGE OF ALTERNATI VES • No No No Action Alternative No-Action Alternative Action Alternative Action Alternative • Existing Alignment Existing Alignment – – Detour Detour • Existing Alignment • Existing Alignment Existing Alignment Existing Alignment – One One-Way Traffic One-Way Traffic One Way Traffic Way Traffic • Parallel Parallel • Base of Bluffs B B Base of Bluffs f Bl ff f Bl ff • Bluffs Bluffs • South of Bluffs South of Bluffs Slide 9
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT NO ACTI ON ALTERNATI VE NO ACTI ON ALTERNATI VE NO-ACTI ON ALTERNATI VE NO-ACTI ON ALTERNATI VE • Provides a baseline for comparison of Provides a baseline for comparison of impacts of action alternatives • Used for comparison purposes only • Used for comparison purposes only Slide 10
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT EXI STI NG ALI GNMENT EXI STI NG ALI GNMENT EXI STI NG ALI GNMENT – EXI STI NG ALI GNMENT – DETOUR ALTERNATI VE DETOUR ALTERNATI VE • Raising the elevation on the current alignment • N-12 closed for 2 years • N-14 to Standing Bear Bridge closed for 4 N-14 to Standing Bear Bridge closed for 4 months • Local and through traffic detours • Local and through-traffic detours • Post-construction access unchanged Slide 11
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT EXI STI NG ALI GNMENT EXI STI NG ALI GNMENT EXI STI NG ALI GNMENT – EXI STI NG ALI GNMENT – ONE-W AY TRAFFI C ALTERNATI VE ONE-W AY TRAFFI C ALTERNATI VE • Raising the elevation on the current alignment • One lane of traffic maintained throughout construction • Traffic control and staged construction • Construction time frame would be 2 2 5 • Construction time-frame would be 2-2.5 years • Post-construction access unchanged P t t ti h d Slide 12
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT PARALLEL ALTERNATI VE PARALLEL ALTERNATI VE PARALLEL ALTERNATI VE PARALLEL ALTERNATI VE • Raised-elevation parallel and adjacent to existing N-12 • Uninterrupted traffic on existing roadway U e up ed a c o e s g oad ay during construction • Asphalt on existing N-12 demolished Asphalt on existing N-12 demolished • Portions of the embankment remain for wave protection for new roadway wave protection for new roadway • Post-construction access unchanged Slide 13
N-12 NIOBRARA EAST & WEST PROJECT N-12 NIOBRARA EAST & WEST PROJECT BASE OF BLUFFS ALTERNATI VE BASE OF BLUFFS ALTERNATI VE BASE OF BLUFFS ALTERNATI VE BASE OF BLUFFS ALTERNATI VE • Shifts alignment south to the base of the Missouri River bluffs • Uninterrupted traffic on existing roadway U e up ed a c o e s g oad ay during construction • Asphalt on existing N-12 demolished Asphalt on existing N-12 demolished • Portions of the embankment remain for wave protection of new roadway wave protection of new roadway • Post-construction access unchanged Slide 14
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