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ST9304-CS 860403 (2)DALLAS COUNTY PUBLIC WORKS April 3, 1986 The Honorable Lou Duggan Mayor of Coppell P. O. Box 478 Coppell, Texas 75019 Re: Belt Line Road Project 490-403 (Moore Road to East City Limits) Dear Mayor Duggan: The question of contacting Texas Utilities Generating Company has been raised in many meetings discussing the realignment of the referenced project. As stated in the alignment study prepared by Ginn, Inc., TUGC was contacted by members of that firm. The County Public Works Department contacted James North, a representative in the Real Estate Division of TUGC. He stated that they were open to discussion of the realignment and right of way ex- change. He further stated that no decision or commitment could be made until TUGC has reviewed the plans for impact on their facilities. For your information and use is a copy of Ginn, Inc.'s align- ment study. The cost estimates listed in the report are re- vised as shown below to account for project scope as described in the election order, i.e., Moore Road to Coppell East City Limits. Alt. No. 1 - 6 lane $4,235.000 Alt. No. 2 - 6 lane $4,400.000 Existing - 6 lane $5,900.000 Alignment 4 lane $3,550.000 4 lane $3,900.000 4 lane $5,200.000 Sincerely, J. W~ Bryan, ~.~:. %. Diredtor of Public Works A~.' ~e Attachment 161 Commerce Dallas, Texas 75207 749-8151 I I I I I I I I I I I I I I I I I I COST ESTIMATES FOR ALTERNATE ALIGNMENTS OF BELT LINE ROAD IN COPPELL, TEXAS (Moore Road to the West Overflow Swale of the Elm Fork of the Trinity River) DALLAS COUNTY, TEXAS March 1986 Ginn, Inc., Consulting Engineers Dallas, Texas ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 1.1 STUDY OBJECTIVES AND SCOPE On February 3, 1986, the City Council of Coppell, Texas, approved a request by the Dallas County Department of Public Works that would authorize the County to begin Preliminary Engineering on Belt Line Road from the eastern City Limits to Moore Road along a route which would be approximately 500 - 600 feet south of its current location. The purpose of this study is to examine the existing and two alternate alignments and prepare cost estimates of each. The narrative and cost estimates are presented herewith. During our investigations, we visited with all of the adjacent property owners, or their representatives, with the exception of Crow-Billingsley, and the cities of Dallas and Irving to collect data on the location of all property and political boundaries, as well as to determine their preferences regarding location and routing of the road and adjustment of affected political boundaries and property lines. Our preliminary cost estimates are based on the alignments studied using the latest aerial topographic data, hydraulic and.hydrological data available from the Federal Emergency Management Administration (FEMA) and current unit prices from similar projects. 1.2 ALTERNATE ALIGNMENTS The portion of Belt Line Road which is under consideration in this study for realignment is that part of the road from Moore Road on the west to the west overflow swale of the Trinity River on the east. The two alternate alignments presented herein are described as follows: 1. Alternate Alignment No. 1 originates at the Moore Road intersection and begins a gentle curve to the right and heads southeast passing diagonally between the first two large towers of the southernmost set of electric transmission lines, west of Grapevine Creek, and then curves gently to the left heading east to the intersection with MacArthur Boulevard, approximately 500 feet south of existing Belt Line Road. From MacArthur Boulevard the alignment roughly parallels the improved channel of Grapevine Creek, some 190 feet to the south, for about 1,300 feet, then departs in an easterly direction to the west bank of the west overflow swale of the Trinity River at a point roughly 750 feet south of the existing alignment of Belt Line Road. 2. Alternate Alignment No. 2 originates at the Moore Road intersection and follows the existing Belt Line Road alignment to the approximate location of the Mockingbird Lane intersection and then curves to the south passing between the first two towers on the southernmost trans- mission line east of Grapevine Creek, and then continues through a curve to the left to the MacArthur Boulevard intersection in the same location as Alternate Alignment No. 1. From MacArthur Boulevard to the east, Alternate Alignment No. 2 follows the same route as that of No. 1. 1.3 EXISTING ALIGNMENT AND RIGHT-OF-WAY The existing alignment of Belt Line Road parallels and is bounded on the north by the right-of-way for the St. Louis and Southwestern Railroad from Moore Road to the Coppell City Limits on the east. The south side of Belt Line Road is currently bounded by: (1) the North'Lake Generating Station, which is within the City Limits of Dallas and is owned by Texas Utilities Generating Company; (2) one tract of land belonging to the Crow-Billingsley Company, which is located within the City Limits of Coppell, Dallas, and Irving; (3) two tracts of land belonging to Dunning Development Company, one on either side of MacArthur Boulevard, and both located in Coppell; and (4) one large tract of land belonging to Triland/Northsted Joint Venture, located in Coppell. The existing right-of-way is 120 feet wide and would require no additional permanent right-of-way if Belt Line Road were to be improved in its current location. Right-of-way for future access points on Belt Line would be the responsibility of those seeking such access. In particular, those seeking access to Belt Line Road from the north must contend with gaining approval of crossings from the St. Louis and Southwestern Railroad, as well as dealing with road inter- sections which are extremely close to the railroad tracks. Future access points from the north are at Mockingbird Lane, MacArthur Boulevard, and possibly the proposed Fairway Drive in the Riverchase Development. 1.4 ALTERNATE ALIGNMENT NO. 1 AND RIGHT-OF-WAY AS shown in Figure 1-1, Alternate Alignment No. 1 departs from the existing right-of-way just east of Moore Road and stays south of the existing right-of-way for its entire length. The proposed right-of-way will be 120 feet in width and the alignment has been established to allow the roadway to pass safely between the existing electric transmission line towers and head east to the MacArthur Boulevard intersection. East of MacArthur, the alignment has been established to allow ample room for development to occur along both the north and south sides 'of the proposed roadway and to meet the eastern section of Belt Line Road in Carrollton. In addition to crossing North Lake Generating Station, this alignment also crosses the Crow-Billingsley Company tract, the two Dunning Development Company tracts, and the Triland/ Northsted Joint Venture tract. Right-of-way for this alignment will not be purchased by Dallas County~and must be donated by the owners of the properties which are either fronted or crossed by the proposed roadway, or exchanged with the/Coun%y for portions of the existing right-Of-way which woul~.~be.~%bandoned by adoption of this alignment. It is our understanding that both Triland/Northsted Joint Venture and Crow-Billingsley Company intend to donate the right-of-way for access to Belt Line Road from the north for Mockingbird Lane, MacArthur Boulevard, and proposed Fairway Drive as well as for those private individuals who presently have residences and/or businesses located north of the St. Louis and Southwestern Railroad and currently have direct access to Belt Line Road. We also understand that Triland has agreed to assume Terra Development Company's responsibilities for providing aesthetic amenities such as brick pavers for the MacArthur/ Belt Line intersection. The cost of extension of existing and future roadways to access this alignment of Belt Line Road will be borne by the adjacent land owners in accordance with the Subdivision Ordinance of the City of Coppell. In order to comply with the Coppell City Council's requirement that the relocated Belt Line Road be located completely within the City Limits of Coppell, portions of the right-of-way for this alternate alignment would have to be deannexed by the City of Dallas for the North Lake Generating Station, and the cities of Dallas and Irving for the Crow-Billingsley tract. Upon deannexation by Dallas and Irving, these tracts would then be annexed by the City of Coppell. In our preliminary discussions with the planning departments of both cities, they seemed amenable to working with Dallas County and the City of Coppell to bring about the above mentioned changes in political boundaries. During the February 3, 1986 Coppell City Council meeting, the Crow- Billingsley Company reported having the same positive response from the City of Irving concerning their property. Preliminary discussions of the deannexation with Texas Utilities Generating Company indicate that they would be willing to apply to the City of Dallas for deannexation of any right-of-way they would exchange with the County, as well as any tracts severed by the new alignment which are currently in the City of Dallas. 1.5 ALTERNATE ALIGNMENT NO. 2 AND RIGHT-OF-WAY This alignment conforms with the existing alignment to a point just east of the proposed Mockingbird Lane intersection. At this point it departs the existing right-of-way heading southeast crossing under the electric transmission lines and turning east joining the same route used by Alternate Alignment No. 1 approximately 300 feet west of the centerline intersection with MacArthur Boulevard. As mentioned in Section 1.2, Alternate Alignment No. 1 and No. 2 share the same route east from MacArthur to the west overflow swale of the Elm Fork of the Trinity River. The proposed right-of-way for this alignment is 120 feet wide and the same provisions mentioned in Section 1.4 for Alternate Alignment No. 1 apply for donation or exchange of right-of-way and for access to the proposed relocated roadway. For this alignment there will be no deannexation or annexation of territory required. 1.6 BASIS OF ESTIMATING PRELIMINARY CONSTRUCTION COSTS The preliminary construction costs for the two alternate alignments and the existing alignments are based on estimated quantities developed from preliminary roadway design layouts and current average unit prices being paid in this area for similar types of work. The unit prices used in the cost estimates in Section 1.8 for the relocated portions of Belt Line Road have been adjusted to reflect lower costs experienced for construction of roads on new rights-of-way where temporary traffic control, detours, confined working areas, and poor visibility are not experienced. 4 The proposed alternate alignments also come much closer to achieving a balance between required cut and fill volumes, and therefore result in lower excavation costs. The relative dearth of utilities requiring relocation in the proposed relocated rights-of-way is another factor which tends to cause the unit prices for the relocated vs. existing alignments to be somewhat lower, owing to fewer delays in roadway construction caused by the utility relocations. The difference in earthwork quantities involved in the alternate alignments result primarily due to the fact that some of the areas along existing Belt Line Road are in or near the 100-year flood plains for Grapevine Creek and the Elm Fork of the Trinity River, and therefore must be filled to a higher elevation; whereas much of the land traversed by the alternate alignments has already been raised above the flood elevations for 100-year floods on both Grapevine Creek and the Elm Fork. 1.7 COPPELL ASSESSMENT POLICY AND ENGINEERING STUDY FOR STREET iMPROVEMENTS The City of Coppell currently is preparing a Street Assessment Policy which will apply to the improvements discussed in this alignment study. Also in progress at this time is an engineering study for street improvements which is addressing the needs, costs, and assessments for improvements of Belt Line Road from Denton Tap Road to the Carrollton City Limits, and Denton Tap Road from Belt Line Road to the Dallas County line. The Street Assessment Policy and the engineering study for street improvements of Belt Line Road an Denton Tap Road will be presented to the Coppell City Council in the near future. 1.8 PRELIMINARY CONSTRUCTION COST ESTIMATES 6 ' $, ¢. e~ $27,7i4. '= 8 ...... ~f.~ ~ .L ........ SS. ~246, .: ~. Li% '*- .... ="*'*""=- Sv 54,?Z'''~ ~' 15 . ~v~--~ ,~r iE,%~ -~" v2~ ~ $7L~c $54.''- ~ $=~,.~.~.. 1~ 6~ ~0~:. ;u~,,. ~3 .;.~-- ev~. 1, ~.~,~¢ ~': $~2. ~? '" .......-' 1£ .... . ..... · ..... i. 8~ $5z., 9,,. 8~ $c ....... 10 1 ~ '~' .~_-.. ~ ~ ~ ~'~. ~. . 7 wv~s,~-r~,,., ,~ L~KE (6~~ TO~ .-,-,::,_~:~ $75. ~54,. ';' ~ :A RZ,SJ::-ZO~, Or '~ .... 11 1.9 SUMMARY The material presented in this study has been researched and prepared to allow Dallas County an opportunity to take a closer look at the alternative alignments which are the most feasible for the relocation of Belt Line Road, prior to beginning preliminary design. On the basis of cost estimates, Alignment No. 1 appears to be the most economical. 12 Ill ,?