Item 4BItem 413
CITY OF
SOUTH LAKE
MEMORANDUM
(September 17, 2013)
To: Shana Yelverton, City Manager
From: Robert H. Price, P.E., Director of Public Works
Subject: Approve Interlocal Agreement with the City of Colleyville for
mitigation efforts to White Chapel Bridge over Big Bear Creek
Action
Requested: Approve Interlocal Agreement with the City of Colleyville for
mitigation efforts to White Chapel Bridge over Big Bear Creek
Background
Information: In December 2011, TxDOT inspected the South White Chapel
Boulevard Bridge over Big Bear Creek as part of its routine off -
system bridge inspection program. A letter documenting the
TxDOT findings was provided to the City of Southlake. The letter
concluded that the unknown foundation depth, the erodible nature
of the sandy channel material, the general hydraulic characteristics
of the stream, and the increase in the length of the exposed
columns over the last several years leads to concerns over public
safety. The bridge leads into the City of Colleyville. The City of
Colleyville has agreed to participate in half of the cost of the
mitigation efforts.
The approval of this Interlocal Agreement (ILA) with the City of
Colleyville for the mitigation efforts to the White Chapel Bridge over
Big Bear Creek will define the costs and the terms of
reimbursement associated with the combined effort of the two
cities. Colleyville agrees to submit a lump sum payment to the City
of Southlake prior to beginning construction. In the event there are
additional costs for construction, the Cities agree to share in 50% of
those additional costs.
In March 2012, the Public Works staff retained the services of Halff
Associates, Inc. to provide an engineering study which included
mitigation options for the White Chapel Bridge over Big Bear Creek
in response to TxDOT's inspection report. Halff Associates, Inc.
has provided both cities with a mitigation recommendation. The
total engineering design shall not exceed $44,350 and the opinion
of probable construction cost for the project is $121,000 for a total
estimated project cost of $165,400.
The cost of this project will be apportioned equally at 50% for each
city.
As mentioned, TxDOT has concerns that without mitigation, further
erosion around the bridge could compromise public safety. Those
concerns could lead to a recommendation by TxDOT to close the
bridge which is a highly traveled connection between the cities of
Southlake and Colleyville.
Financial
Considerations: This project is funded in the FY13 Stormwater Utility Capital
Improvement Program Fund.
Strategic Link: The mitigation efforts of the White Chapel Bridge over Big Bear
Creek provided for under this Interlocal Agreement links to the
City's strategy map relative to the focus areas of Infrastructure, and
Partnerships. The specific corporate objectives that are met by this
construction project include: collaborating with select partners to
implement service solutions, and investing to provide and maintain
high quality public assets. The critical business outcome is to
optimize resources through collaboration and partnerships to
reduce costs and add service value.
Citizen Input/
Board Review: N/A
Legal Review: This Interlocal Agreement is a standard agreement that has been
previously reviewed by the City Attorney.
Alternatives: The City Council may approve or deny the agreement.
Supporting
Documents: Interlocal Agreement
Location Map
Staff
Recommendation: Approve Interlocal Agreement with the City of Colleyville for
mitigation efforts to White Chapel Bridge over Big Bear Creek
Staff Contact: Robert H. Price, P.E., Public Works Director
Cheryl Taylor, P.E., City Engineer
Steven D. Anderson, P.E., CFM, Civil Engineer
INTERLOCAL AGREEMENT
STATE OF TEXAS §
COUNTY OF TARRANT §
This Agreement is made by and between the City of Southlake, Texas ("Southlake") and the
City of Colleyville ("Colleyville"), acting herein by and through their duly authorized city managers,
for the purpose of documenting the terms and conditions of an agreement whereby Southlake will
administer the engineering design contract and the construction contract to make improvements to
scour protection at South White Chapel Road bridge over Big Bear Creek to be known as the White
Chapel Road over Big Bear Creek Scour Countermeasure Project ("Project") and the cities will
divide the local cost share of such project for the design and construction of the Project as indicated
in Exhibit A.
WHEREAS, Chapter 791, Texas Government Code authorizes Interlocal Contracts between
governmental entities to perform services either could undertake individually; and
WHEREAS, Southlake and Colleyville desire to design and construct the White Chapel Road over
Big Bear Creek Scour Countermeasure Project; and
NOW, THEREFORE,
WITNESSETH
Southlake shall provide administration for an engineering consultant contract for design of
the Project.
2. The cost for design of the Project is not to exceed $44,350.00. The share of the cost for
design required from each city will be divided as indicated in Exhibit A.
3. Southlake shall provide administration for a construction contract for construction of the
Proj ect.
4. The cost for construction of the Project is $121,000.00. The share of the cost for
construction required from each city will be divided as indicated in Exhibit A.
5. The City of Colleyville will provide their share of the design and construction costs in a
lump sum payment to the City of Southlake prior to the start of construction.
6. In the event there are additional design costs or expenses involved in the engineering design
contract, the parties agree to share such costs proportionally in the same manner as used for
the initial design cost sharing identified in Exhibit A.
7. In the event there are additional construction costs or expenses involved in the construction
contract, the parties agree to share such costs proportionally in the same manner as used for
the initial construction cost sharing identified in Exhibit A.
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AGREED this day of , 2013.
CITY OF SOUTHLAKE
Un
ATTEST:
Alicia Richardson, City Secretary
APPROVED AS TO FORM AND LEGALITY:
Attorney
Shana Yelverton, City Manager
Page 2 of 4
CITY OF COLLEYVILLE
ATTEST:
Amy Shelley, City Secretary
APPROVED AS TO FORM AND LEGALITY:
Attorney
Jennifer Fadden, City Manager
Page 3 of 4
EXHIBIT A
WHITE CHAPEL ROAD OVER BIG BEAR CREEK SCOUR COUNTERMEASURE
PROJECT PARTICIPATION
Halff Associates, Inc. Design Fee
Construction Cost Amount
Amount shared by Cities of Southlake and Colleyv
City of Southlake share (50%)
City of Colleyville share (50%)
$44,350.00
$121,000.00
$165,350.00
$82,675.00
$82,675.00
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