D-5. 2016 Street Improvements Project 16-017700 Market Boulevard
PO Box 147
Chanhassen, MN 55317
Administration
Phone: 952.227.1100
Fax: 952.227.1110
Building Inspections
Phone: 952.227.1180
Fax: 952.227.1190
Engineering
Phone: 952.227.1160
Fax: 952.227.1170
Finance
Phone: 952.227.1140
Fax: 952.227.1110
MEMORANDUM 0
TO: Paul Oehme, Director of Public Works/City Engineer
FROM: Alyson Fauske, Assistant City Engineer o
DATE: February 22, 2016
SUBJ: 2016 Street and Utility Improvements Project No. 16-01: Approve
Plans & Specifications; Authorize Advertisement of Bids
PROPOSED MOTION:
"The City Council adopts a resolution approving the plans and specifications and
authorizing ad for bids for the 2016 Street and Utility Improvement Project
(Minnewashta Manor Area)."
City Council approval requires a super majority vote of the City Council present.
BACKGROUND
Park & Recreation At the June 22, 2015 work session, staff reviewed with Council the proposed
Phone: 952.227.1120
Fax: 952.227.1110 2016 Street Reconstruction project.
Recreation Center
On August 24, 2015, the City Council authorized preparation of the feasibility
2310 Coulter Boulevard
study.
Phone: 952.227.1400
Fax: 952.227.1404
On November 18, 2015, an open house was held to discuss the proposed project.
Planning &
Natural Resources
On December 14, 2015, the City Council accepted the feasibility study and called
Phone: 952.227.1130
the public hearing.
Fax: 952.227.1110
At the January 25, 2016 meeting, the City Council held the public hearing and
Public Works
authorized the preparation of plans and specifications.
7901 Park Place
Phone: 952.227.1300
Fax: 952.227.1310
DISCUSSION
Every year the City considers streets that are in poor condition to be rehabilitated
Senior Center
or reconstructed. For the 2016 Street Reconstruction Project, staff is proposing to
Phone: 952.227.1125
Fax: 952.227.1110
reconstruct approximately 1.1 miles of streets. The street segments within the
proposed project were identified by the City's Pavement Management software,
Website
site investigations and utility problems in the area.
www.ci.chanhassen.mn.us
The proposed project is in the Minnewashta Manor neighborhood in the northwest
corner of the city. The streets in this project area were constructed in 1971 and
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for bid.doc
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
Paul Oehme
2016 Street Reconstruction Project
February 22, 2016
Page 2
were sealcoated in 1994 and 1999. The pavement condition indices (PCIs) are shown on the graphic
below. A PCI of 100 represents a new street. Streets with a PCI below 45 typically indicates
distresses that require a full reconstruction, therefore, it is no longer cost effective to repair the streets
with minor maintenance or perform a bituminous overlay.
The street widths vary between 20' and 28' within 50' or 60' wide right of way. The drivable portion
of the streets (i.e. the bituminous surface and the concrete gutter) is proposed to be the same as the
existing widths. The proposed pavement section includes 18" of sand, 10" of Class 5 and 3.5" of
bituminous as recommended by the soils engineer.
It has been the City's practice to install concrete curb and gutter in reconstruction projects whenever
possible. New developments always include concrete curb and gutter. Concrete curb and gutter
effectively conveys drainage from the bituminous section of the street which helps to prolong the life
of the street. It also provides a delineation between the street and yard which helps snow and ice
control operations minimize yard damage. The addition of curb and gutter also directs run off to
storm water features so the water can be treated and not end up in side or back yards where it can
gAeng\public\_2016 projects\16-01 street and utility reconstruction\communication\20160222 approve p&s authorize ad for bid.doc
Paul Oehme
2016 Street Reconstruction Project
February 22, 2016
Page 3
cause problems. Staff recommends high back, B-618 curb in this area due to the hydraulics of the
style. The addition of curb to the project increases the estimated assessment amount by $680.
Water Main Improvements
The water main in this area is either cast or ductile iron pipe. Locations of 10 documented water
main breaks are shown on the graphic below. Staff proposes to replace the water main with PVC
water main. All services would also be replaced. Alternatives to open cut installation, such as pipe
bursting and directional drilling, will be bid as a potential time and cost-saving measure.
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Sanitary Sewer Improvements
Staff has investigated and televised the condition of the sanitary sewer in this area. Approximately 50
feet of sewer is proposed to be replaced due to the condition of the pipe. The remaining sewer pipe is
in good structural condition, although some require mineral removal, grouting and/or lining to reduce
the incidence of inflow and infiltration. These minor repair areas are also proposed to be fixed at this
time.
A 10" diameter sanitary sewer force main extends from Lift Station #4 and under the north -south
section of Washta Bay Road. The Utility Department potholed the ductile iron force main and
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Paul Oehme
2016 Street Reconstruction Project
February 22, 2016
Page 4
confirmed that the pipe is in good condition. An anode bag will be added to act as a sacrificial
material to prolong the life of the force main.
Storm Sewer Improvements
The existing corrugated metal pipe within the Washta Bay Road and Sandpiper Trail right of way is
in poor condition and is proposed to be abandoned and filled with sand. Reinforced concrete pipe is
proposed to be installed within these streets. The corrugated steel pipe that serves TH 7 and is along
Washta Bay Road is in poor condition and should be replaced.
The project area is fully developed, therefore, there is minimal space to provide traditional
stormwater management, namely treatment ponds. Staff recommends that the project include two
rain gardens along Washta Bay Road, SAFL baffles and improvements within the vacant right of way
from the Tanagers Lane/Sandpiper Trail intersection to Lake Minnewashta. Restoration of the
wetland south of Sandpiper Trail is proposed to be completed in-house next year due to budget and
time constraints resulting from permitting requirements.
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Paul Oehme
2016 Street Reconstruction Project
February 22, 2016
Page 5
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PROJECT FUNDING
Assessments will be based on the City's assessment practice of assessing 40% of the street
improvement cost to the benefitting properties on a per lot basis. The assessments would be proposed
for a 10 -year term at a preliminary interest rate of 5.25%.
Budgets for the proposed work have been included in the 2016 CIP. A summary of the feasibility
estimate and CIP budget is below:
Funding Source
Feasibility
Estimate
Budget
Revolving Assessment Fund
$1,400,900
$1,560,000
Storm water Utility Fund
$363,100
$300,000
Sanitary Sewer Utility Fund
$237,400
$300,000
Water Utility Fund
$836,900
$825,000
Total $2,838,300
$2,985,000
The estimated costs include 10% contingency and 11 % indirect costs.
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Paul Oehme
2016 Street Reconstruction Project
February 22, 2016
Page 6
A portion of the storm sewer within Washta Bay Road conveys drainage from State Highway 7.
Based on conversations with staff it seems unlikely that MnDOT will contribute funding for a portion
of the storm sewer replacement cost.
Estimated Assessments:
Total estimated street costs: $1,400,900
Total estimated assessable street costs: $1,203,600*
40% assessed: 40% of $1,203,600 = $481,440
59 assessable units
$481,440 _ 59 units = $8,160/unit**
*Staff proposes that the City fund more than 60% of the cost of North Manor Road and
Orchard Lane due to the low number of properties adjacent to these streets.
* *The estimated assessment was rounded up to the nearest $10 increment. The final
assessment will be based on the bid price and will be to the nearest $0.01.
The estimated assessment lies within the benefit range identified of past consultation reports.
SCHEDULE
The proposed project schedule is as follows:
Call Assessment Hearing March 21, 2016
Assessment Hearing; Accept Bids and Award Contract April 25, 2016
Start Construction June, 2016
Construction Substantially Complete August, 2016
Attachments: 1. CIP pages
2. Resolution
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Capital Improvement Program 2016 thru 2020
City of Chanhassen, MN
Project # ST -012
Project Name Annual Street Improvement Program
Department Street Improvements
Contact Paul Oehme
Type Improvement
Useful Life Unassigned
Category Streets/Highways
Account #I 601-xxxx-4751 Account 43 Priority n/a
Account #2 Account #4
Description Total Project Cost: $25,569,500
Annual project to rehabilitate and reconstruct streets in the City. Current 5 -year plan shows the following neighborhood areas:
2016 - North Manor Road, Washta Bay Road, Tanagers Lane, Sandpiper Trail, Piper Ridge Lane, Minnewashta Woods Drive, Fox Path area,
Lone Cedar area, Ches Mar Drive and Stoughton Ave
MSA - Park Road overlay and Park Place
2017 - Flamingo Drive area
MSA - Bluff Creek Drive overlay and Bluff Creek Drive Trail extension.
2018 - Orchard Lane, Forest Avenue, Forest Circle, Oriole Avenue, 64th Street and 96th Street
2019 - Fox Path area, Frontier Trail (north of 77th Street), Choctaw, and Kurvers Point
MSA - Minnewashta Parkway overlay
2020 - Chan View area
I Justification I
The City uses a Pavement Management System to monitor the condition of the City streets. While proper preventative maintenance extends the
life of the street and is cost effective, a street will eventually deteriorate to a point that further maintenance is no longer cost effective.
Rehabilitation projects extend the life of the street. In cases when utilities or poor sub grade needs to be replaced or where streets have
deteriorated to a point where rehabilitation will no longer be practical, reconstruction of the street is necessary. A feasibility study is written to
consider the merits of the project and scope of work.
The Highway 212 improvement project included a pedestrian trail along the first 2,500 feet of Bluff Creek Drive. The resulting "gap" represents a
missing link in the City's trail system south to Flying Cloud Drive. Bluff Creek Drive is a difficult stretch of road to negotiate as a pedestrian in
the absence of a trail. This trail segment is planned to be constructed along with the 2017 MSA street reconstruction.
Prior
12,945,000
Total
Prior
12,945,000
Total
Expenditures 2016 2017 2018 2019 2020 Total
Construction
Funding Sources
3,460,000 2,322,400 1,687,300 2,654,800 2,500,000 12,624,500
Total 3,460,000 2,322,400 1,687,300 2,654,800 2,500,000 12,624,500
2016 2017 2018 2019 2020 Total
Assessment/Revolving 2,260,000 922,400 1,687,300 1,754,800 2,500,000 9,124,500
Assess Fund
MSA 1,100,000 1,400,000 900,000 3,400,000
Other Agency Contribution 100,000 100,000
Total 3,460,000 2,322,400 1,687,300 2,654,800 2,500,000 12,624,500
Budget Impact/Other
This project may decrease maintenance costs.
Capital Improvement Program 2016 thru 2020
Department Sanitary Sewer Improvements
City of Chanhassen, MN Contact Paul Oehme
Project # SS -014 Type Improvement
Project NameUseful Life Unassigned
Sanitary Sewer Replacement
Category Utilities
Account #1 701-7025-4751 Account 93 Priority n/a
Account #2 Account #4
Description -� Total Project Cost: $1,890,000
teplacement or rehabilitation of existing sanitary sewer lines in conjunction with the reconstruction of the City street.
Justification
The City considers the condition of the existing utilities in the process to select streets for rehabilitation in an effort to realize cost savings by
consolidating these projects.
Prior Expenditures
2016 2017 2018 2019 2020 Total
1,000,000 Construction
300,000
40,000
250,000
50,000
250,000
890,000
Total
Total 300,000
40,000
250,000
50,000
250,000
890,000
Prior Funding Sources
2016
2017
2018
2019
2020
Total
1,000,000 Sewer Utility Fund
300,000
40,000
250,000
50,000
250,000
890,000
Total
Total 300,000
40,000
250,000
50,000
250,000
890,000
Budget Impact/other
This project will decrease maintenance costs.
Capital Improvement Program 2016 thru 2020
City of Chanhassen, MN
Project # SWMP-019
Project Name Street Improvement Projects - Storm Water Mgmt
Account #1 720-7025-4751
Account #2
Account #3
Account #4
Department
Surface Water Management
Contact
Paul Oehme
Type
Improvement
Useful Life
Unassigned
Category
SWMP
Priority
n/a
Description I Total Project Cost: $2,075,000
An annual amount set aside for storm water management infrastructure construction or expansion associated with street improvement projects
undertaken by the engineering and public works departments.
Justification
Street improvement projects frequently require construction or expansion of storm water management infrastructure in order to comply with
federal, state and local regulations, as well as protecting existing and proposed development adjacent to the projects.
Prior
Expenditures
2016
2017
2018
2019
2020
Total
1 722-5,-00-01
construction
300,000
75,000
200,000
75,000
200,000
850,000
Total
Total 300,000
75,000
200,000
75,000
200,000
850,000
Prior
Funding Sources
2016
2017
2018
2019
2020
Total
1,225,000 Surface Water Utility Fund 300,000 75,000 200,000 75,000 200,000 850,000
Total Total 300,000 75,000 200,000 75,000 200,000 850,000
Budget Impact/Other
Inventory, inspection and maintenance of new infrastructure will be required. Citywide. No map
Capital Improvement Program 2016 thru 2020
City of Chanhassen, MN
Project # W-024
Project Name Watermain Replacement
Account#1 700-7025-4751
Account #2
Account #3
Account #4
Department Water System Improvements
Contact Paul Oehme
Type
Improvement
Useful Life
Unassigned
Category
Utilities
Priority
n/a
Description Total Project Cost: $5,120,000
Replacement of existing water main lines in coordination with the reconstruction of the City street projects or minor fixes of water distribution
system for street rehabilitation projects.
Justification
The City considers the condition of the existing utilities in the process to select streets for rehabilitation in an effort to realize cost savings by
consolidating these projects and also to avoid potential cuts in recently improved streets. If significant repairs are necessary to the existing water
main, replacement may be the most cost effective option. Given the highly corrosive soils in the City, water main replacement is an ongoing
project in the City.
Prior
2,500,000
Total
Expenditures 2016 2017 2018 2019 2020 Total
Construction 825,000 75,000 770,000 100,000 850,000 2,620,000
Total 825,000 75,000 770,000 100,000 850,000 2,620,000
Prior Funding Sources
2016
2017
2018
2019
2020
Total
2,500,000 Water Utility Fund
825,000
75,000
770,000
100,000
850,000
2,620,000
Total
Total 825,000
75,000
770,000
100,000
850,000
2,620,000
Budget Impact/Other
[hese projects will decrease maintenance costs.
CITY OF CHANHASSEN
CARVER AND HENNEPIN COUNTIES, MINNESOTA
DATE: February 22, 2015 RESOLUTION NO: 2016 -XX
MOTION BY:
SECONDED BY:
A RESOLUTION APPROVING PLANS AND SPECIFICATIONS
AND AUTHORIZING AD FOR BIDS FOR THE 2016 STREET
RECONSTRUCTION (MINNEWASHTA MANOR AREA)
PROJECT NO. 16-01
WHEREAS, pursuant to the resolution passed by the Council on January 25, 2016, the City
Engineer has prepared plans and specifications for the 2016 Street Reconstruction (Minnewashta
Manor area) Project and has presented such plans and specifications to the Council for approval;
NOW, THEREFORE, BE IT RESOLVED that the Chanhassen City Council:
1. Such plans and specifications, a copy of which can be reviewed at the office of the City
Engineer, are hereby approved.
2. The city clerk shall prepare and cause to be inserted in the official city newspaper and
QuestCDN.com, an advertisement for bids upon the making of such improvement under such
approved plans and specifications. The ad shall be published at least three times, shall specify the
work to be done, shall state that bids will be opened and that the responsibility of the bidders will
be considered by the Council at 7:00 PM on Monday, April 25, 2016, for the 2016 Street
Reconstruction (Minnewashta Manor area) Project No. 16-01, in the Council Chambers of the City
Hall. Any bidder whose responsibility is questioned during consideration of the bid will be given
an opportunity to address the Council on the issue of responsibility. No bids will be considered
unless sealed and filed with the clerk and accompanied by a bid security payable to the clerk for 5%
of the amount of such bid.
Passed and adopted by the Chanhassen City Council this 22" day of February, 2016.
ATTEST:
Todd Gerhardt, City Manager
Denny Laufenburger, Mayor
YES NO ABSENT