2009 Year in Review - Delaware Department of Transportation...PLACE, CRACKED, NO EXPANSION BETWEEN...
Transcript of 2009 Year in Review - Delaware Department of Transportation...PLACE, CRACKED, NO EXPANSION BETWEEN...
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102 Final Inspections during 2009
58 Const. Projects
38 New Subdivisions
6 Commercial Entrances
2007
79
65
2008
71
15
16
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“Quality Counts”
2009 PROJECTS
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September 2003
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POST CONSTRUCTION
REVIEWSfor
2009
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POST CONSTRUCTION REVIEWS
IN 2009
• 22-124-06 US13 / DE404 INTERSECTION REALIGNMENT & BRIDGEVILLE SERVICE ROAD
• 25-090-01 I-95 FIFTH LANE PROJECT
• 22-074-14 WOODDALE COVERED BRIDGE
• 28-062-04 PAVEMENT & REHABILITATION SOUTH I – IV, 2008
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POST CONSTRUCTION REVIEWS2009
• NORTH PUBLIC WORKS SECTION
• CENTRAL PUBLIC WORKS SECTION
• SOUTH PUBLIC WORKS SECTION
• BRENFORD STATION SUBDIVISION
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US13 / DE404 INTERSECTION REALIGNMENT, BRIDGEVILLE
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PROBLEMS:
COLOR QUALITY
CRACKING
INCONSISTENT JOINTS
POOR ALIGNMENT OF CONCRETE POURS
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MAINTENANCE ???
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STRIPING PROBLEMS
USE ONE OR THE OTHER, NOT BOTH TOGETHER
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DRAINAGE ISSUES
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I-95 FIFTH LANE WIDENING PROJECT
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WETLANDS
• MINIMAL DISTURBANCE OF WETLANDS
– USE OF VERTICAL SHEET PILING SAVED OVER 7 ACRES OF WETLAND FROM IMPACT!
– LESS THAN 1/4 ACRE DISTURBED
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COST SAVINGS• 35% RAP IN THE BASE COURSE HOT MIX VS.
THE CURRENT 20% LIMIT– SAVED ON AC COSTS
• USING MILLINGS FOR SUBBASE MATERIAL– SAVE EXPORT AND IMPORT COSTS– FEWER TRUCKS ON THE ROADS
• FEWER EMISSIONS • LESS IMPACT TO PAVEMENT SURFACES
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ROAMING TRAFFIC OFFICERS
• IN PLACE EARLY
• WORKED WELL
• 4,866 TICKETS ISSUED– 1,814 FOR
SPEEDING
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Contract 28-062-04Pave & Rehab South I
Full-Depth Reclamation
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•MORE COST EFFECTIVE - IF >15% PATCHING REQUIRED
•6” – 8” OF EXISTING HOT MIX PREFERED
• MINIMUM OF 2” OF EXISTING HOT MIX SHOULD REMAIN
FULL-DEPTH RECLAMATION
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PLACE TOPSOIL AT
6:1 TO ALLOW FOR POSITIVE
DRAINAGE
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GUARDRAIL ADJUSTMENT NEEDED
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12” PIPE INSTALLED
15” MINIMUM REQUIRED
NORTH PUBLIC WORKS
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CHAPTER 6 - ROAD DESIGN MANUAL
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STRIPING CONCERNS
DOUBLE LEFT ARROWS, STACKING LINE
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STRIPING CONCERNS
•PIANO KEYS WERE EPOXY, NOT THERMO•TAPE ON PCC PAVEMENT•DRC (DESIGN RESOURCE CENTER)
– STRIPING ITEMS GUIDELINE
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NO ACCESS TO THE SIDEWALK
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CORNERS NOT FLUSH ON ISLAND
REFERENCE– SUPPLEMENTAL
SPECIFICATION 701.11 FINISHING
RECOMMENDATION– BETTER INSPECTION
FLEXIBLE RUBBER DELINEATORS MISSING
DEPRESS CORNERS
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CENTRAL PUBLIC WORKS
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DEPRESS ENDS OF CURB
REFERENCE:
SUPPLEMENTAL SPECIFICATION 701.11
Punch list item
SUPPLEMENTAL SPECIFICATION 701.11 DEPRESS ENDS OF CURB
STOP BAR EXTENDED ACROSS DUE TO SIGNALIZED INTERSECTION
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TURN LANE STRIPING
• IMPROPER STACKING LINE• EDGE LINE MISSING
BETTER PLAN REVIEW
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DRAINAGE INLETS
ISSUES
FORMS STILL IN PLACE, CRACKED, NO EXPANSION BETWEEN HEAD AND CURB.
BETTER INSPECTION
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DRAINAGE INLETS
ISSUES
FORMS STILL IN PLACE, CRACKED, NO EXPANSION BETWEEN HEAD AND CURB.
BETTER INSPECTION
94 1/4” MINIMUM
STANDARD CONST DETAIL D-5, Sht 3 of 9
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FIRE HYDRANT CONNECTION HEIGHT
18”
FIRE HYDRANT CONNECTION HEIGHT
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STOP BAR LOCATION
4’ MINDE MUTCD 3B-49
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5’ WIDE SIDEWALKS
REFERENCE
SEE PLAN SHEET NO. 4 POLICY IMPLEMENT O-02 KENT CO. CODE 187.60 (E)
RECOMMENDATION
SHOULD HAVE BEEN CONSTRUCTED AS REQUIRED BY REGULATION AND POLICY IMPLEMENT
POLICY IMPLEMENT 0-02 5’ WIDTH REQUIRED
4’
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SOUTH PUBLIC WORKS PROJECTS
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UTILITY POLE WITHIN CLEAR ZONE
UTILITY POLE WITHIN CLEAR ZONE
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UTILITY POLE WITHIN CLEAR ZONE
• REFERENCE:– AASHTO ROADSIDE
DESIGN GUIDE, CHAPTER 3
• RECOMMENDATION:– TELEPHONE POLES
SHOULD BE LOCATED OUTSIDE OF CLEAR ZONE• CHEVRONS WERE
PLACEDGEORGE SPADAFINO WORKED WITH DELDOT UTILITY SECTION AND THE UTILITY PROVIDER TO HAVE THIS POLE RELOCATED!
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Front Slope 4:1 or 25%
Desired 6:1 or 17%
ROAD DESIGN MANUAL SECTION 4
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HAND RAIL AT CULVERT DROP OFF
HANDRAILS
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CURB OPENING INLET
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CURB OPENING
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BRENFORD STATION SUBDIVISION
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‘BEFORE’
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“GREEN TECHNOLOGY”
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“GREEN TECHNOLOGY”
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Curb Openings
Standard Const Detail C-4
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COORDINATION WITH MULTIPLE AGENCIES
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DRIVEWAY SLOPE
Standard Const Detail C-3
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Driveway Aprons
Standard Const Detail C-3
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SUPERELEVATED ROADWAY CROSS SLOPES
http://deldot.gov/information/pubs_forms/manuals/road_design/index.shtml
See Chapter 5
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Design Guidance MemorandumsDGM’s
http://www.deldot.gov/information/pubs_forms/manuals/dgm/index.shtml
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Design Guidance Memorandums
• http://www.deldot.gov/information/pubs_forms/manuals/dgm/index.shtml
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• 1-1 Brick and Concrete Sidewalk• 1-2 Class C Pipe Bedding• 1-3 Use of Guard Rail End Sections• 1-4 Design Exception• 1-5 Bid Analysis and Recommendation to
Award Procedures• 1-6 Concrete Pavement Rubblization• 1-7 Contract Certification Requirements• 1-8 Grass Shoulder
Design Guidance Memorandums
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• 1-9 Defining Pavement Coring and Subsurface Investigation
• 1-10 Pavement Design Requirements• 1-11 Subsurface Investigation for Consultant
Designed Projects• 1-12 Escrow Bid Documents• 1-13 Construction Cost Estimate Procedure• 1-14 Bus Shelter Setback Requirements• 1-15 Personnel Grate for Pipe Inlet
Design Guidance Memorandums
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• 1-16 Curb Ramps• 1-18 Continuous Longitudinal Rumble Strips• 1-19 Machine Control• 1-20R Pipe Materials• 1-21 Use of Temporary Traffic Barrier in
Work Zones• 1-22 Triangular Channelizing Islands• 1-23 Tax Ditches
Design Guidance Memorandums
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• 2-1Strip Seal Joint on Bridges• 2-2Cantilever Signs• 2-3Roadside Treatment Under Structure• 2-4Bridge Approach Slabs • 2-5Bridge Scuppers• 2-6Consultant Project Working Drawing
Stamp and Process
Design Guidance Memorandums
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DGM 1-2 Class C Pipe Bedding
Standard Const Detail D-8
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DGM 1-16 Curb Ramps
Curb ramp construction is required during the following operations:
• Roadway construction
• Resurfacing projects
• Sidewalk construction
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Detectable Warnings shall be installed at crosswalks (marked & unmarked)
Signalized entrances;
High volume entrances with ADT greater than about 400;
Entrances with an operating speed of 25 m.p.h. or greater through the pedestrian area;
Locations deemed hazardous
Railroad crossings.
DGM 1-16 Curb Ramps
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Bus Stops
Required Elements:
• Level Boarding/Alighting Pad – 5’ wide x 8’
• Accessible Route from the bus stop to the street or sidewalk system – NO DESERTED ISLANDS
• If there is a bus shelter, an accessible route from the Boarding/Alighting Pad to the shelter and the sidewalk
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Bus Stops
Correctly constructed, accessible bus stops save the state money if Paratransit users can be transitioned to the fixed bus routes.
Costs to the state:
• Paratransit Trip – $ 40.00
• Fixed Route Bus Trip – $ 4.00
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DGM 1-22 Triangular Channelizing Islands
When in the area of the shoulder require:
• Positive drainage
• 5’ bike lane
• Corners flush with the pavement
• Flexible delineators
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• Positive drainage
• 5’ bike lane
• Corners flush with the pavement
• Flexible delineators
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DGM 1-20R Pipe Materials
The decision on what type of pipe to be used shall be based on:
• Economics
• Available cover
• Other factors that may affect pipe performance, such as:– soil pH– type of water exposure– susceptibility to abrasion or fire
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DGM 1-20R Pipe Materials
Any type of pipe needs to be installed correctly.
• Use undamaged pipe• Tight Joints• Proper Bedding Material• Proper Cover• Compaction, Compaction, Compaction
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DGM 1-20R Pipe Materials
• Look at the DGM for the types of pipes and the different service levels.
• There will be future revisions of this DGM.
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Old Lancaster Pike – HDPE Pipe
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Old Lancaster Pike – HDPE Pipe
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Old Lancaster Pike – HDPE Pipe
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DGM 1-23 Tax Ditches
• Tax Ditches - are private property owned jointly by the adjacent property owners who have formed an organization to construct and maintain the drainage system.
• Officers of these organizations are elected by the owners. (See Title 7, Chapter 41 of the Delaware Code.)
• ATTENTION: without an easement or other sort of agreement, performing work on a tax ditch is trespassing.
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DGM 1-23 Tax Ditches
• Private property – In order for DelDOT to access a ditch on private property, there must be made an agreement with the property owner.
• – PE (permanent easement)– TCE (temporary construction easement)– Trespass agreement
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DGM 1-23 Tax Ditches
• All agreements must be submitted to Team Support Section.
• Team Support and Real Estate sections can assist with process.
• Private property – Work must be contained within the limits of
the easement.
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PROJECT ACCEPTANCE
• Every project must follow the formal acceptance process in accordance with Section 105 of the Standard Specifications.
• Every project with plans must turn in As-Built Drawings. Forward them to Heather Jester of Quality Section for archiving.
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Thank You