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ST9902-CS030925PROJECT SCOPE ITEMS SANDY LAKE - FREEPORT PARKWAY TO DENTON TAP ST 99-02B PAVEMENT AND ALIGNMENT TOPICS PAVEMENT SECTION PAVING DESIGN CRITERIA City of Coppell Construction Design Standards & North Central Texas Council of Governments Standard Specifications for Public Works Construction ROW WIDTH: Existing: Varies from 55' to 120' Proposed: 90' minimum PAVEMENT WIDTH: Existing: 24' Proposed: 2 - 27' back to back No. of lanes proposed: 4 lanes PARKWAY: Proposed Width: Varies 10' minimum Proposed Sidewalk Width: Sidewalks are 5' & hike and bike trail is 10' Parkway cross fall slope maximum: 3"/ft. GRADE REQUIREMENTS: Is TC below adjacent ground criteria to be followed? N__~o Any deep cuts, high fills? Yes PAVEMENT CROSS FALL: PROPOSED: ¼"/ft. MINIMUM: ¼"/ft. MAXIMUM: ¼"/ft. PROJECT SCOPE ITEMS Sandy Lake - Freeport Pkw¥ To Denton Tap (ST 99-02B) VERTICAL GRADE: MINIMUM: 0.5% MAXIMUM: 5.13% CENTERLINE ALIGNMENT POSITION: 1N CENTER OF EXISTING ROW? N~o OFFSET FROM CENTER: Varies ON BRAND NEW ALIGNMENT? No LEFT TURN LANES: 15 left turn lanes MINIMUM LENGTH: 155.5' MINIMUM STORAGE: 60' WIDTH: 10' ANY DUAL LEFT TURN LANES? ANY FREE RIGHT TURN LANES? YES NO YES NO X One ~ Denton Tap CRASH CUSHIONS/ATTENTUATORSINVOLVED YES NO X RAILROAD CROSSINGS INVOLVED YES NO X NOTE: IF CURRENT CROSSING IS NOT USED, IS ABANDONMENT AN OPTION? YES NO 2 PROJECT SCOPE ITEMS Sandy Lake - Freeport Parkway To Denton Tap (ST 99-02B) PAVEMENT STRUCTURE DESIGN WHEEL LOAD: 18 kip single axle load BUS AND HEAVY TRAFFIC: YES X NO ROADWAY CLASSIFICATION: Maior arterial MINIMUM PAVEMENT STRUCTURE THICKNESS: 8-- MiNIMUM PAVEMENT BASE OR SUBGRADE THICKNESS: 8'-- DESIGN SPEED: Coppell Road South Intersection) POSTED: 35 MPH MEDIANS MEDIAN WIDTH: 16' ANY MID BLOCK OPENiNGS TO CONSIDER? 50 MPH (40 MPH ~,, Coppell Road North Intersection & 45 MPH ~ ANY SIDE STREETS TOO CLOSE FOR OPENING? (Branchwood Drive & Georgian Lane) STANDARD TURN LANE WiDTH: STANDARD NOSE WiDTH: 6-- YES NO YES NO 11' min. & 12' max. X X PROJECT SCOPE ITEMS Sandy Lake - Freeport Parkway To Denton Tap (ST 99-02B) DRIVEWAYS: MAXIMUM RESIDENTIAL GRADE: V4"/ft. MAXIMUM COMMERCIAL GRADE: ~"/ft. MiNIMUM COMMERCIAL DRIVEWAY WIDTH: 20' / 15' one wa,/ SIDE STREET CONSIDERATIONS TURNiNG RADIUS, MINIMUM: 35' maior / 25' residential and minor Streets PAVEMENT THICKNESS: 8-- COMMERCIAL DRIVEWAY THICKNESS: 6-- DRAINAGE TOPICS STORM SEWER DESIGN CRITERIA: TxDOT CITY City of Dallas Drainage Design Criter/a HYDRO-35 X TP-40 INLET DEPTHS (APPROPRIATE FOR PAVEMENT THICKNESS) 4 ½' MiNIMUM COVER LATERALS 2' below subgrade B~DGES/BOX CULVERTS INVOLVED YES X NO 100 YEAR FLOOD PLAIN CONSIDERATION yes / 2 FT FREEBOARD PROJECT SCOPE ITEMS Sandy Lake - Freeport Parkway To Denton Tap (ST 99-02B) PERMITS COE 404 PERMITS NEEDED YES may be required because of the creek crossing and construction of new bridge NO TNRCC 401 PERMIT YES may be required as part of 404 NO CDC PERMIT YES NO X ADA PERMIT YES NO X (If> $50,000 ofpedesrrianfacilities) ANY OTHER PERMITS FROM OTHER AGENCIES SUCH AS TxDOT, DFW, AIRPORT, DART, ETC? YES (Plans will be submitted to the Texas Historical Commission - may need permit if it is determined that any archaeological sites are in the vicinity of the proiect ) NO UTILITIES LIST OF ALL KNOWN UTILITES: 1. Southwestern Bell 2. Oncor Gas & Electric 3. Verizon 4. AT&T Broadband 5. Metromedia Fiber Network 6. Touch America DOCUMENT KNOWN RISKS ( TRA lines, Transmission Towers, Lone Star Gas Valve Stations) FOR OUR UTILITY PARTNERS: Oncor transmission towers - street alignment moved to south to miss large 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_po ANY SPECIAL CONSDERATIONS? N__9_o PROJECT SCOPE ITEMS Sandy Lake - Freeport Parkway 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 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 sufficienl 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 ANY NON-CONFORMiNG ISSUES? R-O-W MAP NEEDED YES NO X FIELD NOTES NEEDED R-O-W PLATS NEEDED RELOCATION ASSISTANCE iNVOLVED PARKING/LOSS OF PARKING CONSIDERATIONS HISTORICAL SITE CONSIDERATION NO X YES Completed NO YES Completed NO YES. X NO YES NO X YES NO X YES NO X PROJECT SCOPE ITEMS Sandy Lake - Freeport Parkway To Denton Tap (ST 99-02B) USUAL CITY TOPICS OF CONCERN DESIGN STANDARDS TO BE USED? City o£Coppell Design Standards & NCTCOG ORDER OF PRECEDENCE OF STANDARDS. City o£Coppell Design Standards & NCTCOG AUXILIARY LANES? None PROVISIONS FOR FUTURE WIDENiNG? N~o LANDSCAPiNG? Under separate contract Parks and Recreation Department EXPOSED AGGREGATE DRIVEWAYS, SIDEWALKS? Nc> STAMPED/COLORED CONCRETE? Yes IRRIGATION? Yes BRICK PAVERS? Yes STREET LIGHTING? Streetlights will be placed in the median. Installation of the foundations and conduit are included as part of the construction. Oncor will perform the actual streetlight installation. TRAFFIC SIGNALS? At the Coppell Road North and Coppell Road South intersections PAVEMENT MARKINGS? Yes BIKE LANES (EXTRA WIDTH)? NEW SIDEWALKS? Yes DART BUS TURNOUTS? N~o BUS STOPS OR BUS SHELTERS? No WATER UTILITY BETTERMENTS? No SAN. SEWER BETTERMENTS? No Outer lane is 14.5' & a separate 10' hike & bike trail WATER UTILITY RELOC.? Yes SAN. SEWER RELOC.? Yes PROJECT SCOPE ITEMS Sandy Lake - Freeport Parkwy To Denton Tap (ST 99-02B) RETAINiNG WALLS? Proposed decorative stacked-block retaining wall system (STONE, BLOCKS, GABIONS, PROPRIETARY TYPES) SOD, SEEDiNG, TOPSOIL? Yes DRAINAGE IMPROVEMENTS? Enclosed drainage system improvements & bridge RR CROSSiNG IMPROVEMENTS? N~o GRADE SEPARATIONS? N~o 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'? approval of preliminary plans and award of construction contract YES X NO HAVE ALL NEIGHBOR GROUPS PROVIDED EARLY INPUT? YES proiect will be broken into two sections, Freeport Pkwy. To Coppell Road, and Coppell Road to Denton Tap - citizen input will be solicited NO for the Coppell Road to Denton Tap section X NEIGHBORHOOD MEETINGS REQUIRED? not required, but will be conducted YES NO X IF REQUIRED WHO CONDUCTS, CITY OR COUNTY? City DOCUMENT POTENTIAL SITES FOR PUBLIC AND OR NEIGHBORHOOD MEETiNGS. The meetings will be conducted at City Hall, located at 255 Parkway Boulevard PROJECT SCOPE ITEMS Sandy Lake - Freeport Parkway To Denton Tap (ST 99-02B) CONSTRUCTIBILITY REPORT FROM iNSPECTION STAFF, DOCUMENT ANY AND ALL ISSUES THAT MAY AFFECT PROJECT SCOPE, BUDGET, CONSTRUCTIBILITY, THE PROJECT SCHEDULE AND/OR THE SAFETY OF PROJECT. The east half of West Sandy Lake Road, from Freeport Parkway to Denton Tap Road 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 side of Sandy Lake and five buried power line crossing 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 buried lines that feed off of this line that will need to be evaluated. There is a high-pressure 24-inch gas line that crosses the roadway that may require lowering. There are gas distribution lines on both the north and south sides 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 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. The interconnect system of the proposed traffic signals will need to be addressed. Tree removal from Coppell Road to Denton Tap will be a major issue.