ST8505-CS 860527GINN, INC.
Nay 27~ ~986
CONSULTING ENGINEERS
#r. Ed Powell, City Enginee£
P.O. Box 478
Coppell, TX 75019
Re: Street Assessment Program
Dear Hr. Povell:
Ne have revised page 10 of the April 1, 1986 report on the
Assessment Program as it pertains to Denton Tap Road and Belt
Line Road in Coppell. We are transmitting the revised report
herewith and trust that this information viii satisfy your
needs. Please provide the City Manager, Mayor, and Council
members with the revised report.
Please call if you have any questions.
Sincerely,
Wayne Ginn, P.E.
/s r
Enclosure
16135 Preston Road · Suite 106 · Dallas, Texas 75248 · Phone 214/386-6611
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GINN, INC. CONSULTING ENGINEERS
April 1, 1986
Bonorable Lou Duggan & City Council
P,O. Box 478
Coppell, TX 75019
Re: Street Assessment Program
Gentlemen:
The follovin9 is a preliminary sumn~ry of the financial impact
an assessment program v/Il have on the City of Coppell's
proposed construction program for Belt Line Road and Denton Tap
Road. This assessment program vould be used throughout Coppe11
for all other thoroughfares also. It vould maximize the
contribution by Dallas County from the recent County Bond
Program.
The following assumptions are used in the calculation:
1. The $4+ million Dallas County Bond Program funds would be
used uniformly on Belt Line Road (East) and Denton Tap Road
(North). The total distance is 31,100_+ feet (5.9 miles).
The allocation of bond funds would be approximately $135.00
per foot of street.
2. The City of Coppell would fund the difference in
construction cost for any roadway segment.
The City of Coppell would recover the maximum amount of
funds allowed by state law through the assessment program.
The formula for assessment would be:
The following evaluations are based on cost estimates for
divided thoroughfares:
a. Total construction cost minus County participation
equals gross cost to City.
b. 90% of gross cost (to be recovered) divided by length of
project equals the cost per foot to be recovered.
c. 50% of cost per foot to be recovered is to be applied to
adjacent properties. (fxcludin9 intersection rights-of-
way, railroad right-of-way, parks, etc.)
d. The City would pay for street lights, signals, and
landscapin9 .
e. The assessments would be paid back throughout the time
frame specified in the ordinance. Assessments could be
volunteered and paid in advance.
6-lane -~
16135 Preston Road · Suite 106 * Dallas, Texas 75248 · Phone 214/386-6611
BTRE~ B~IENT BVALUATIOIi
SEGMENT
Denton Tap Road (Sandy Lake Road north to the Denton County
Line): Project length ia 6,480 feet. The total assessable
front footage is 9,702 feet (74.8t of total).
Construction Cost
County Participation
$4,$00,000.00 *
87 .ooo.oo
Gross Cost to City of Coppell
$3,725,000.00
Assessments @ 90% ($3,352,500.00)
Recoverable assessments (74.8%)
Net Cost to City
2,508,000.00
$1,217,000.00
Assessment Project Cost/ft.
Assessment Cost/Front foot
517.00
258.00
Includes
1. Replacement of bridge over Denton Creek to clear lO0-
year flood w.s.
2. Widening of existing Cottonwood Branch bridge.
Denton Tap Road (Belt Line Road north to Sandy Lake)8
P£o~ect length is 7,522 feet. The total assessable front
footage is 14,437 feet (95.9% of total}.
Construction Cost
County Participation
$3,700,000,00
1,000,000.00
Gross Cost to City
$2,700,000.00
Assessment @ 90% ($2,430,000.00)
Recoverable Assessments (95.9%)
Net Cost to City
2,330,000.00
370,000.00
Assessment Project Cost/ft.
Assessment Cost/Front foot
$ 323.00
$ 161.00
Includes:
1. Grapevine Creek bridge replacement to raise above 100-
year flood w.s.
4
Belt Line Road
Project length is 6,003 feet.
foota9e is 2,195 feet (18.3%
Construction Cost
County Participation
Gross Cost to City
(Denton Tap Road east to Hoore Road)z
The total assessable front
of total).
$2,045,000.00
810,000.00
$1,235,000.00
Assessment @ 90% ($1,111,000.00)
Recoverable Assessments (18.3%)
Net Cost to City
203,000.00
$1,032,000.00
Assessment Project Cost/ft.
Assessment Cost/Front foot
185.00
93.00
5
SEOINEHT IJO. 4 z
Belt Line Road (Noore Road east to the East City Liuit --
Existing Alignment)z ~ro~ect length is 10,990 feet. The
total assessable front footage ia 9,022 feet (41.05% of
total).
Construction Cost
County Participation
$5,931,000.00
1.483.000.00
Gross Cost to City
$4,448,000.00
Assessment @ 90% ($4,003,000.00)
Recoverable Assessments (41.0%)
Net Cost to City
~.641.000.00
$2,807,000.00
Assessment Project Cost/ft.
Assessment Cost/Front foot
$ 364.00
$ 182.00
* If properties north of railroad volunteer an assessment of
$182.00/front foot ($782,600.00) then the recoverable assessment
would be approximately $2,423,600.00, and thus the net cost to
the City would be reduced to $2,024,400.00.
Belt Line Road (Moore Road to the East City Lis/t --
Alternate Alignment Mo. 1)~ Project length is 11,090 feet.
The total assessable front footage 19,040 feet (85.8% of
total).
Construction Cost
County Participation
$4,225,000.00
1.497.000.00
Gross Cost to City
$2,728,000.00
Assessment @ 90% ($2,455,000.00)
Recoverable Assessments (85.8%)
Net Cost to City
2,106.000.00
$ 622,000.00
Assessment Project Cost/ft.
Assessment Cost/Front foot
221.00
110.50
7
Belt Line Road
is 9,500 feet.
11,069 feet (58.3% of total).
(18635 to Denton Tap Road): Project length
The total assessable front footage is
Const,uction Cost
County Participation
Gross Cost to City
$6,700,000.00
700,000.00
$6,000,000.00
Assessment @ 90% ($5,400,000.00)
Recoverable Assessments (58.3%)
Net Cost to City
3,146.200.00
$2,853,800.00
Assessment Project Cost/ft.
Assessment Cost/Front foot
568.42
284.21
]~v. 5/86
$100,000 per Bile. Landscaping costs are also estimated at
$100,000 per Bile. Traffic signal installation costs are
estimated to be $75,000 per intersection.
The cost of sidewalks has not been included in the construction
cost estimates for the above due to the undeveloped condition of
mst of the frontages. If construction of sidewalks were to be
included as a part of any of the roadway segments considered
above, it would add approxi~ately $10.00 of assessable cost per
front foot to the project.
ITEM DESCRIPTION
Denton Tap Road -
Sandy Lake Rd. to
Denton County Line
Landscape
Lighting
Signals
$122,727.00
122,727.00
75.000.00
Subtotal $320,454.00
Denton Tap Road -
Belt Line Rd. to
Sandy Lake Rd.
Belt Line Road -
Denton Tap Rd. to
Moore Road
Landscape
Lighting
Signals
Subtotal
Landscape
Lighting
Signals
Subtotal
$142,462.00
142,462.00
150.000.00
$434,924.00
$113,693.00
113,693.00
25,000.00
$252,386.00
e
Belt Line Road -
Existing Moore Rd.
to East City Limits
Landscape
Lighting
Signals
Subtotal
$208,144.00
208,144.00
15o,0oo.0o
$566,288.00
Belt Line Road -
Alternate Alignment
No. 1 - Moore Rd. to
East City Limits
6.* Belt Line Road -
IH635 to Denton Tap
Landscape
Lighting
Signals
Subtotal
Landscape
Lighting
Signals
Subtotal
$210,'038.00
210,038.00
150,000.00
$570,076.00
$179,924.00
179,924.00
209,848,00
$869,696.00
8 Rev. 5/86
Belt Line Road -
ZB635 to Denton Tap
DESCRIPTION
Landscape
Lighting
Signals
Subtotal
$179,924.00
179,924.00
150.000.00
$509,848.00
8a **Rev. 5/86
The following summary table lists the pro~ect segments in
ascending order based on net cost to the City o~
SUMMARY TABLE
SEGMENT NET GROSS LXGHTINGw LAHDSCAPE,
. NO. COST COST TItAFFIC SIGNALS
2 $ 370,000 $2,700,000 $ 43S,000
5 622,000 2,728,000 570,000
3 1,032,000 1,235,000 252,000
! 1,217,000 3,725,000 320,000
4 566,000
2,807,000 4,448,000
($2,024,400)*
6** 2,853,900** 6,000,000'* 509,848**
* Net Cost to City with voluntary assessments from properties
north of £ailroad tracks.
If the City elects to construct any or all of the thoroughfare
segments, the City must have the 9ross cost to the City
available prior to awardin9 any construction contracts.
9 **Rev. 5/86
The overall benefLt of this type of &ssess~ent progrimvould be
to &llov the construction of &pproxl~ately $23 Billion of street
l~proveBents with the funding being supplied as follows~
City of Coppell $ 8.3 Billion*
Dallas County 4.9 Billions 21%
ldiacent Property O~ners 9.8 Billions
(by assessment)
,s These figures include construction of Segments
and $ as described herein without credit for assessments for the
properties north of the St. Louis Southwestern Railroad along
segment 4.
It is recommended that the City of Coppell adopt this type of
assessment program in order to maximize the County's participa-
tion and reduce the City's expenditures and thus allow the
building of the 9rea%est amount of thoroughfares for the City.
The details of this summary report will be presented in our
final report.
Sincerely,
B. Wayne Ginn, P.E.
HWG/sr
** ~ev. 5/86