ST9902-CS040720Page 1 of 1
Suzan Taylor - Sandy Lake Road
From:
To:
Date:
Subject:
Suzan Taylor
.~Norman. RB_PO.Central@dallascounty.org
7/20/2004 2:23 PM
Sandy Lake Road
Janet:
I have completed the scoping sheets. I had previously submitted these to David NcSwain, but there have been
some changes that are reflected in the attached document. The engineer for the project submitted a cost
estimate in April 2004. The estimated cost for the construction of this section of Sandy Lake is $5,538,725.
Dallas County will participate in the construction cost in the amount of $1,300,000. Dallas County funds will not
be available until October 2006. The construction of the project is scheduled to start in June 2007.
file://C:~Documents%20and%20Settings\staylor~Local%20Settings\Temp\GW} 00001 .HTM 7/20/2004
ATTACHMENT A
Supplemental Agreement to Master Agreement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
Date: 07-20-04
PROJECT LENGTH: _+5786'
PAVEMENT AND ALIGNMENT TOPICS
PAVEMENT SECTION
PAV1NG DESIGN CRITERIA: City of Coppell Construction Design Standards
North Central Texas Council of Governments Standard Specifications for Public Works
ROW WIDTH:
Existing: Varies from 55' to 120'
Proposed: 90' Minimum
PAVEMENT WIDTH:
Existing: 24~'
Proposed: 66' (4 lanes ~ 12.5' + 16' median)
No. of lanes proposed: 4-Lane Divided
PARKWAY:
Proposed Width: 12' minimum
Proposed Sidewalk Width: 5' sidewalks & 8' hike and bike trail
Parkway cross fall slope maximum: 3" per foot
GRADE REQUIREMENTS:
Is TC 6" below adjacent ground criteria to be followed? N~o
Any deep cuts, high fills ? Yes
PAVEMENT CROSS FALL
PROPOSED; ¼" per foot
MiNIMUM: ¼" per foot
MAXIMUM: ¼ "per foot
07/12/2004 draft 9
ATTACHMENT A
Supplemental Agreement to Master Agreement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
VERTICAL GRADE:
MINIMUM: 0.5%
MAXIMUM: 5.13%
CENTERL1NE ALIGNMENT POSITION:
IN CENTER OF EXISTING ROW ? N~o
OFFSET FROM CENTER: Varies
ON BRAND NEW ALIGNMENT? N~o
LEFT TURN LANES: 15 left turn lanes
M1NIMUM LENGTH: 155.5'
MIN1MUM STORAGE: 60_~'
WIDTH: 11~'
ANY DUAL LEFT TURN LANES? N~o
ANY FREE RIGHT TURN LANES? Yes (Denton Tap/Sandy Lake Road Intersection)
CRASH CUSHIONS / ATTENTUATORS INVOLVED: N~o
RAILROAD CROSSINGS INVOLVED: No
07/12/2004dra~ 9
ATTACHMENT A
Supplemental Agreement to Master Agreement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
PAVEMENT STRUCTURE
DESIGN WHEEL LOAD: 18 kip single axle load
BUS AND HEAVY TRUCK TRAFFIC:
YES X
NO
ROADWAY CLASSIFICATION: Major arterial
MINIMUM PAVEMENT STRUCTURE THICKNESS: 8'~'
MINIMUM PAVEMENT BASE OR SUBGRADE THICKNESS: 8'--
DESIGN SPEED:
S. intersection
POSTED SPEED: 35 MPH
MEDIANS
MEDIAN WIDTH: 16~'
ANY MID BLOCK OPENINGS TO CONSIDER?
50 MPH (40 MPH (& Coppell Road N. intersection and 45 MPH (&Coppell
ANY SIDE STREETS TOO CLOSE FOR OPENING?
(Oak Trail & Georgian Drive)
YES
NO
YES
NO
11' minimum & 12' maximum
STANDARD TURN LANE WIDTH:
X
X
STANDARD NOSE WIDTH: 6--
07/12/2004 draft 9
ATTACHMENT A
Supplemental Agreement to Master Agreement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
DRIVEWAYS:
MAXIMIMUM RESIDENTIAL GRADE: 6%
MAXIMIMUM COMMERCIAL GRADE: 6°__/o
MINIMUM COMMERCIAL DRIVEWAY WIDTH: Width = 20' / 15' one-way Radius = 10'
SIDE STREET CONSIDERATIONS:
TURNING RADIUS MINIMUM: 35' major / 25' residential and minor streets
PAVEMENT THICKNESS: g--
COMMERCIAL DRIVEWAY THICKNESS: 6'~'
DRAINAGE TOPICS
STORM SEWER DESIGN CRITERIA: TxDOT
CITY City of Dallas Drainage Design Criteria
HYDRO-35 X
TP-40
iNLET DEPTHS (APPROPRIATE FOR PAVEMENT THICKNESS):
MINIMUM COVER LATERALS: 2' below subgrade (Typical)
BRIDGES/BOX CULVERTS INVOLVED
4.5' (Typical)
YES X
NO
100 YEAR FLOOD PLAIN CONSIDERATION yes / 2 FT FREEBOARD
07/12/2004 draft 9
ATTACHMENT A
Supplemental Agreement to Master Agreement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
PERMITS
COE404 PERMITS NEEDED
YES may be required because of Cottonwood Cr.
NO
TNRCC 401 PERMIT
YES may be required as part of the 404 permit
NO
CDC PERMIT YES
NO X
ElS YES __
NO X
ADA PERMIT YES X
NO
ANY OTHER PERMITS FROM OTHER AGENCIES SUCH AS TXDOT, DFW AIRPORT,
DART ETC.? YES Texas Historical Commission
NO
UTILITIES
LIST OF ALL KNOWN UTILITIES
1. SBC Communications, 2. Oncor Electric Delivery, 3. TXU Gas, 4. Verizon, 5. Comcast,
6. AboveNet, 7. 360networks (USA)
DOCUMENT KNOWN RISKS FOR OUR UTILITY PARTNERS: roadway alignment moved
to the south to miss Oncor transmission towers
ARE UTILITIES ON EXISTING STREET R.O.W.? Yes
DO UTILITIES OWN THEIR R.O.W. OR HAVE PREVIOUS EASEMENTS ? Oncor has 40'
utility easement
HAS WORK ORDER BEEN ISSUED FOR SUE (Subsurface Utility Engineering) ? N~o
ANY SPECIAL CONSIDERATIONS ? No
07/12/2004 draft 9
ATTACHMENT A
Supplemental Agreement to Master Agreement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
R-O-W ACQUISITION
RIGHT OF WAY CONSTRAiNTS, IF ANY, PROVIDE A LIST AND DESCRiPTION
ALONG WITH DATA FOR RISK ASSESSMENT: Many of the newer residential
developments have dedicated the right-of-way to accommodate the roadway widening. In
addition, they have utility, landscape, and open space easements established beyond the right-of-
way dedication. In the case of most older subdivisions, individual properties, and undeveloped
tracts, the existing right-of-way is not sufficient for the proposed widening. There does not
appear to be any right-of-way constraints.
ANY NON-ROUTiNE, i.e., CEMETARY, JUNK YARD, OLD CHURCHES, SERVICE
STATIONS, CONTAMiNATED SOILS, LANDFILLS, NOISE WALL CONSIDERATIONS,
TRAILER PARKS, TREE ORDINANCES? YES __ NO X
ANY NON-CONFORMiNG ISSUES ?
YES
NO X
R-O-W MAP NEEDED
YES completed
NO
FIELD NOTES NEEDED
YES completed
NO
R-O-W PLATS NEEDED
YES X
NO
RELOCATION ASSISTANCE iNVOLVED
PARKING/LOSS OF PARKING CONSIDERATIONS
HISTORICAL SITE CONSIDERATION
YES
NO X
YES
NO X
YES
NO X
07/12/2004 draft 9
ATTACHMENT A
Supplemental Aereement to Master Agreement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
USUAL CITY TOPICS OF CONCERN
DESIGN STANDARDS TO BE USED ? City of Coppell Construction Design Standards &
NCTCOG Standard Specifications for Public Works Construction
ORDER OF PRECEDENCE OF STANDARDS: (1) City of Coppell Standards (2) NCTCOG
AUXILIARY LANES? None
PROVISIONS FOR FUTURE WIDENING? N~o
LANDSCAPING? Under separate contract Parks and Recreation Department
EXPOSED AGGREGATE DRIVEWAYS, SIDEWALKS? N_po
STAMPED/COLORED CONCRETE? Yes
IRRIGATION? Yes - installation of the conduit is included in this project
BRICK PAVERS? N~o
STREET LIGHTING? Streetlights will be placed in the median - installation of the foundations
and conduit will be included in this proiect. Oncor will install wiring and streetlights.
TRAFFIC SIGNALS? Yes at the Coppell Road North and Coppell Road South intersections
PAVEMENT MARKINGS? Yes
BIKE LANES (EXTRA WIDTH)? N~o
NEW SIDEWALKS ? Yes
DART BUS TURNOUTS? N~o
BUS STOPS OR BUS SHELTERS? N_9_o
07/12/2004 dra~ 9
ATTACHMENT A
Supplemental Agreement Fo Master Aereement Governing
Transportation Maior Capital Improvement Projects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
WATER UTILITY BETTERMENTS? Nc)
WATER UTILITY RELOC.? Yes
SAN. SEWER BETTERMENTS? Yes
SAN. SEWER RELOC.? Yes
RETAiNING WALLS? Decorative stacked-block retaining wall system
(STONE, BLOCKS, GABIONS, PROPRIETARY TYPES)
SOD, SEEDING, TOPSOIL? Yes
DRAINAGE IMPROVEMENTS? Enclosed drainage system improvements and bridge
RR CROSSING IMPROVEMENTS? No
GRADE SEPARATIONS? Nc)
RAMPS OR CONNECTORS TO TXDOT FACILITIES? No
SPECIAL SCHOOL OR EMERGENCY VEHICLE
CONSIDERATIONS
ANY NEARBY OR ADJACENT SCHOOLS, CITY HALL, FIRE OR POLICE
DEPARTMENT REQUIRING SPECIAL CONSIDERATION? N~o
PUBLIC INVOLVEMENT
CITY COUNCIL APPROVAL OF ALIGNMENT, REQUIRED ? YES X
(approval of preliminary plans and award of construction contract) NO
HAVE ALL NEIGHBOR GROUPS PROVIDED EARLY iNPUT? YES __
(citizen input will be solicited) NO X
07/12/2004 draft 9
ATTACHMENT A
Supplemental Agreement to Master Aereement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap)
ST 99-02B
NEIGHBORHOOD MEETING, REQUIRED
(not required but will be conducted)
1F REQUIRED WHO CONDUCTS, CITY OR COUNTY? City
YES
NO X
CONSTRUCTIBILITY REPORT
FROM INSPECTION STAFF, DOCUMENT ANY AND ALL ISSUES THAT MAY AFFECT
PROJECT SCOPE, BUDGET, CONSTRUCTIBILTY, THE PROJECT SCHEDULE AND/OR
THE SAFETY OF PROJECT ?
Sandy Lake Road, from Coppell Road North to Denton Tap, is almost completely developed
with residential subdivisions. Right-of-way will be required on both sides of the existing
roadway.
The existing irrigation and landscaping adjacent to the right-of-way, and currently maintained by
an HOA, is an issue that will have to be addressed.
Four of the smaller Oncor Electric transmission poles will need to be relocated. They are located
within an exclusive Oncor easement and the relocation will be an expense of the City.
There are overhead power lines on the south of Sandy Lake and five underground power line
crossings that will need to be relocated. There is an overhead power line on the north side of the
roadway that will need to be relocated. There are several underground lines that feed off of this
line that will have to be evaluated.
There is a high-pressure 24-inch gas line that crossed the roadway that may require lowering.
There are gas distribution lines on both the north and south side of the roadway that will need to
be relocated.
Access across construction areas will need to be provided throughout all phases of construction.
Temporary pavement will be needed to accommodate construction and to allow the existing
roadway to remain in use. Most intersections will need to be constructed in phases to facilitate
continuous access to and from Sandy Lake Road. Access to private drives will also have to be
maintained.
07/12/2004dra~ 9
ATTACHMENT A
Supplemental Agreement to Master Agreement Governing
Transportation Maior Capital Improvement Proiects
DESIGN AND CONSTRUCTION CRITERIA
PROJECT NAME:
W. Sandy Lake Road (Coppell Road N. to Denton Tap) ST 99-02B
The interconnect system of the proposed traffic signals will need to be addressed. Tree removal
will be a major issue.
MASTER AGREEMENT FUNDING
On October 17, 2000. Dallas County Commissioners Court approved participation in
Transportation Major Capital Improvement Projects for the Program Years 2004, 2005,
and a portion of 2006 by Court Order 2000-2117 with a list of proposed accepted projects
attached to the Court Order. A MASTER AGREEMENT GOVERNING
TRANSPORTATION MAJOR CAPITAL IMPROVEMENT PROJECTS was
executed by the Town of Addison and Dallas County pursuant to Court Order No. 2002-
1375 dated July 30, 2002 which authorized transportation improvements
TOTAL ESTIMATED PROJECT COSTS
CITY AND/OR OTHERS PARTICIPATION
DALLAS COUNTY PARTICIPATION
$5,538,725
$4,238,725
$1,300,000
07/12/2004 draft 9