Interchange Performance Matrix...Outer barriers to feature Holophane Washington post top fixtures on...

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Text Goes Here Interchange Performance Matrix Interchange Performance Matrix Factor Standard Diamond Roundabouts Diverging Diamond Description TRAFFIC OPERATIONS 20 Year Traffic Operation No Appreciable Difference Between the Three Options. Indication of acceptable traffic operations in design year peak hour conditions. Reserve Capacity After Expansion Indication of acceptable traffic operations in future peak hour conditions. Roundabouts will need to be three lanes to accommodate projected traffic, which is not desirable to the City. Relative Vehicular Safety Each interchange type will be designed to current AASHTO and safety standards, however, the crash rates and severity differ due to geometry and traffic operations. Bicycle Operation / Friendliness Stress level of cyclists increase with merging into traffic or merging into the shared use side paths at the roundabouts. Pedestrian Operation / Friendliness Signalized intersections will have pedestrian signals, and the roundabouts will have pedestrian refuge islands with crosswalks that only cross traffic going one direction. COSTS Initial Construction Cost No Appreciable Difference Between the Three Options. Construction cost only. Expansion Construction Cost Construction cost only. (Note that the expansion costs are anticipated to be from City or private funds.) Maintenance Cost No Appreciable Difference Between the Three Options. The standard diamond has signals and the most pavement, bridge, and storm drainage infrastructure to maintain. The diverging diamond has signals to maintain. ENVIRONMENTAL STEWARDSHIP No Appreciable Difference Between the Three Options. Footprint of interchange in environmentally sensitive areas, amount of material needed to construct, storm drainage runoff, and other environmental factors where considered. RIGHT‐OF‐WAYACQUISITION Comparison of total acreage of right‐of‐way to be acquired. AESTHETICS Roundabouts provided more space for aesthetics, however, MoDOT requirements limit features that can be included at the ramps. ECONOMIC DEVELOPMENT No Appreciable Difference Between the Three Options. All three interchange types provide good access management and developable land for the impacted property owners. Performance Rating Scale Excellent Good Fair Poor

Transcript of Interchange Performance Matrix...Outer barriers to feature Holophane Washington post top fixtures on...

Page 1: Interchange Performance Matrix...Outer barriers to feature Holophane Washington post top fixtures on 14- foot tall poles installed on light blisters Inner barriers to feature 28-inch

Text Goes Here

Interchange Performance Matrix Interchange Performance Matrix

Factor Standard Diamond Roundabouts  Diverging Diamond  Description 

TRAFFIC OPERATIONS     

20 Year Traffic Operation No Appreciable Difference Between the Three Options.  Indication of acceptable traffic operations in design year peak hour conditions. 

Reserve Capacity After Expansion       Indication of acceptable traffic operations in future peak hour conditions. Roundabouts will need to be three lanes to accommodate projected traffic, which is not desirable to the City. 

Relative Vehicular Safety        Each interchange type will be designed to current AASHTO and safety standards, however, the crash rates and severity differ due to geometry and traffic operations. 

Bicycle Operation / Friendliness       Stress level of cyclists increase with merging into traffic or merging into the shared use side paths at the roundabouts. 

Pedestrian Operation / Friendliness       Signalized intersections will have pedestrian signals, and the roundabouts will have pedestrian refuge islands with crosswalks that only cross traffic going one direction. 

COSTS     

Initial Construction Cost No Appreciable Difference Between the Three Options.  Construction cost only. 

Expansion Construction Cost       Construction cost only. (Note that the expansion costs are anticipated to be from City or private funds.) 

Maintenance Cost No Appreciable Difference Between the Three Options.  The standard diamond has signals and the most pavement, bridge, and storm drainage infrastructure to maintain. The diverging diamond has signals to maintain. 

ENVIRONMENTAL STEWARDSHIP No Appreciable Difference Between the Three Options.  Footprint of interchange in environmentally sensitive areas, amount of material needed to construct, storm drainage runoff, and other environmental factors where considered. 

RIGHT‐OF‐WAY ACQUISITION       Comparison of total acreage of right‐of‐way to be acquired. 

AESTHETICS       Roundabouts provided more space for aesthetics, however, MoDOT requirements limit features that can be included at the ramps. 

ECONOMIC DEVELOPMENT No Appreciable Difference Between the Three Options.  All three interchange types provide good access management and developable land for the impacted property owners. 

 

Performance Rating Scale 

Excellent

Good

Fair

Poor

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CLMM LAND CO., LLC

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ESTATE DEVELOPMENT, INC

HUNT MIDWEST REAL

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CLMM LAND CO., LLC

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AUDREY B. WILKERSON

WILLIAM A. &

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SHELLY S. FRAZIER

KEVIN J. &

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LOYD J. & JUDITH R. CANNING

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NANCY L. NICHOLSON

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7

I-35 HOLDINGS, LLC

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STAR DEVELOPMENT CORPORATION

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MONA M. SNIDER

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GARY WADE & JANET R. SHANKS

PROPOSED DITCHES

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EXISTING EASEMENTS

EXISTING RIGHT - OF - WAY (CITY)

EXISTING RIGHT - OF - WAY

EXISTING PROPERTY LINE

SCALE (FEET)

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Page 4: Interchange Performance Matrix...Outer barriers to feature Holophane Washington post top fixtures on 14- foot tall poles installed on light blisters Inner barriers to feature 28-inch

CITY OFKEARNEY

MISSOURI

CONCEPTUAL DESIGN | 19th STREET INTERCHANGE IMPROVEMENTSKEARNEY, MO | JANUARY 22, 2019

MATERIAL IMAGES

BRIDGE AESTHETICS

ELEVATION

SECTION

FORM LINER

METAL RAILING

LIGHTING

HOLOPHANE WASHINGTON LIGHT FIXTURE

ON 14’ POLE

3’x10’ ‘KEARNEY’ SIGN INSTALLED

ON BARRIER

ALL BARRIERS TEXTURED

W/ ASHLAR PATTERNED

FORM LINERS

SQUARE PIERS TEXTURED W/ ASHLAR PATTERNED FORM LINERS

HOLOPHANE WASHINGTON LIGHT FIXTURE

ON 14’ POLE

LIGHT BLISTER

SQUARE PIERS TEXTURED W/

ASHLAR PATTERNED FORM LINERS

32” BARRIERS TEXTURED

W/ ASHLAR PATTERNED

FORM LINERS 28” METAL RAILING

42” BARRIERS TEXTURED W/ ASHLAR PATTERNED FORM LINERS

I-35 NORTHBOUND LANES

I-35 SOUTHBOUND LANES

19th STREET

PIER CAP

All concrete barriers, piers, and walls to be textured with ashlar-patterned form liners

Outer barriers to feature Holophane Washington post top fixtures on 14- foot tall poles installed on light blisters

Inner barriers to feature 28-inch tall decorative metal railings similar to Ameristar ‘Echelon’

3’ by 10’ KEARNEY sign to be installed on outer bridge barriers facing north and south

Signal poles and arms at intersections to be black

+

+

+

+

BRIDGE WALLS TEXTURED W/ ASHLAR PATTERNED FORM LINERS

PIER CAP

SIGNAGE +