1 m-150 / botts rd interchange modot project no. j4p2251 pre-bid meeting june 24 th, 2010
TRANSCRIPT
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M-150 / Botts Rd InterchangeMoDOT Project No. J4P2251
Pre-Bid MeetingJune 24th, 2010
Agenda
Project Description
Project Schedule
Project Coordination with Adjacent Projects
Traffic Control Phases
Special Features Q&A
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Botts Road and M150 Interchange
Existing Conditions• At-grade
intersections• Development in NW
Quadrant and South of M-150. National Security Campus and Centerpoint Development
• Development south of M-150: Kansas City Southern Intermodal Facility
• New Interchange construction at US 71
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Botts Road at M150: Two Components
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Botts Road North of M-150
Interchange at Botts Road and M-150 (Includes Auxiliary Lanes)
Project Description
• Interchange Construction of NEW Diverging Diamond
Interchange Botts Road over M150 Auxillary lanes from Botts to US 71
• Botts Rd Reconstruction of existing 2 lane. M-150 north ½ mile to Grandview city limits. M-150 south to tie in to existing Botts Rd.
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What is a Diverging Diamond Interchange (DDI)?
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The Botts Road and M-150 DDI
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Project Schedule
Advertisement July 15, 2010
Contract Letting August 20, 2010
Construction Notice to Proceed October 4,2010
Construction Complete by October 2012
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Coordination with Adjacent Projects
National Security Campus• Development in NW quadrant
JE Dunn is contractor Coordinate access between projects Coordinate construction activities
US 71/M-150 Interchange• Clarkson Construction is contractor
M-150/Thunderbird Rd Half Diamond Interchange • Partnership between KCS and MoDOT
Currently in Negotiations
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Traffic Control Phases
Phase I• Construct Botts Rd
Existing Botts Rd to be closed to public ½ mile corridor 4 access drives Signal at South Access Drive Ditches instead of standard curb & gutter
• Interchange North bridge abutment South bridge abutment Ramps Retaining wall Auxiliary lanes from M-150 to US 71 Median treatment between Andrews and Colorado
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Traffic Control Phases
Phase 2• Interchange
Divert traffic to ramps to build center pier Complete bridges
Phase 3• Close Thunderbird Rd (to remain open until end
of project)• Interchange median islands
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Special Features
Walkway Down Center of Bridge to Allow Pedestrian Access
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Special Features
Green Solutions
• Dry detention basins:
Note the controlled fill
Review spillway structure details
• Topsoil removal and placement incidental to Excavation, Embankment and Compaction
• Extra care required to avoid or mitigate compaction in all planted areas (BMP’s)
• Note the check dams in selected swales
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Special Features
Green Solutions
• Some vegetated areas will be planted with plugs (basins, swale bottoms)
• Bonded fiber matrix mulch for slopes greater than 6:1
• Note the 2-year establishment period for native plantings
• Note the Geocell reinforcement stormwater basin maintenance paths
• Review erosion and sediment control plan
• Temporary cover plantings required if planting seasonal periods missed
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Special Features
Hardscape
• Review architectural elements within the interchange islands (recycled glass surface, etc.)
• Note architectural elements in Botts Road median
• Note amended fill for plantings in medians
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