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CONSTRUCTION IMPACTS
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THOSE MOST LIKELY IMPACTED
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MITIGATION STRATEGIES
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VALLEY HIGHWAY APPLICATIONS
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NOISE
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Local Residents & Businesses
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Construction BMP’s
Temp Noise Walls / Screens
Vouchers for Hotels
Construction during Less
Noise Sensitive Times
Noise Hotline with actual
person to talk to
Send information to affected
public prior to construction
Note that there are seasonal
differences relative to noise
Email/Voice Mail prior to
construction activities
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Noise Avoidance at Sensitive
Receptors (Neighborhoods
Adjacent to Corridor)
Specifically at I-25/Broadway
and 6th/Federal
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ACCESS
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Local Residents &
Businesses
Traveling Public
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Enhanced Signing
Alternate Access
Enhancements
Advertising / Public Relations
Do Not Close Multiple
Interchanges Concurrently
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Difficult Areas – Santa
Fe/Kalamath/Alameda,
Broadway, Bryant
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TRAFFIC
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Detours
Lane closures
Congestion
Parking Impacts
Construction Vehicles on
Local Streets
Safety of Lane Shifts
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Local Residents &
Businesses
Traveling Public
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Limit Detours
Detours on Major Arterial
Streets – No Local Street
Detours
Construction During Periods
of Least Traffic
Geometric Enhancements
including Wider Lanes and
Better Visibility
Limit Construction Vehicles
to Major Arterials
Enforcement of Speed
Restrictions; Provide
Adequate Space for
Enforcement on I-25; Make
Prime Contractor Accountable
Courtesy Patrol
Enhanced Signing
Phase Construction to Limit
Traffic in Neighborhoods
AASHTO, MUTCD
Compliance
Coordinate Work Activities
with Sporting /Entertainment
Events
Advance Traffic Diversion (470
Beltway, Colfax as alternate
to 6th)
ITS/VMS to advise/redirect
traffic
Work with RTD to offer
enhanced operations during
peak construction
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Construction requiring special
traffic mitigation:
- Santa Fe/Kalamath Grade Separation with Railroad and Alameda
- Alameda at I-25 and Railroad/LRT
- I-25 Mainline North of Alameda
- 6th Avenue
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MODIFIED PEDESTRIAN / BIKE MOBILITY
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Local Residents
Commuters
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Well Defined Detours for
Peds & Bikes
Enhanced Safety Through
Signing/Fencing/ Lighting
Public Relations Program
ADA Compliance
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Bayaud Overpass as
Mitigation to Alameda
Improvements
6th Avenue Bridge over Platte
River (possible detour required)
Broadway – Maintain At-grade
Accessibility to RTD park n
Ride
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ENVIRONMENTAL IMPACTS
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Dust / Air Quality
Hazardous Waste
Water Quality
Resource use\ Recycling
materials
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Construction Workers
Downstream Water Users
Local Residents &
Businesses
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Wetting / Chemical Inhibitors
for Dust
Early Investigation of
Subsurface Conditions
Well Defined Materials
Handling Plan
Educated Contractor with
Trained Personnel
Prompt & Safe Disposal of
Waste Products
WQ BMP’s
Storm Water Management
Plan
Monitoring
Resource Reuse and
Allocation
Regulatory Compliance
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Hazardous Waste Sensitivity
at Broadway, Santa
Fe/Kalamath Grade
Separations with Railroad
and Alameda
Water Quality Ponds – Early
Action Item
Erosion Control – Staged vs.
Completed at end of
Construction
Resource Reuse –
Opportunities, 350,000 SY
Concrete/Asphalt Removal,
10 Bridges require Removal
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