E-4. 2016 Street Recon Project 16-01 Accept Feasibility Study and Call PH0
CITY OF
CHANHASSEN
7700 Market Boulevard
PC 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
Park & Recreation
Phone: 952.227.1120
Fax: 952.227.1110
Recreation Center
2310 Coulter Boulevard
Phone: 952.227.1400
Fax: 952.227.1404
Planning &
Natural Resources
Phone: 952.227.1130
Fax: 952.227.1110
Public Works
7901 Park Place
Phone: 952.227.1300
Fax: 952.227.1310
Senior Center
Phone: 952.227.1125
Fax: 952.227.1110
E -1
MEMORANDUM
TO:
FROM
DATE:
SUBJ:
Paul Oehme, Director of Public Works /City Engineer
Alyson Fauske, Assistant City Engineer 01�
December 14, 2015 0
2016 Street Reconstruction Project No. 16 -01: Accept Feasibility
Study; Call Public Hearing
PROPOSED MOTION
"The City Council accepts the feasibility report for the 2016 Street
Reconstruction Project No. 16 -01 and calls the public hearing for January 25,
2016.
City Council approval requires a simple majority vote of the City Council
present."
BACKGROUND
At the June 22, 2015 work session, staff reviewed with Council the proposed 2016
Street Reconstruction project.
On August 24, 2015, the City Council authorized the preparation of the feasibility
study.
On November 18, 2015, an open house was held to discuss the proposed project.
DISCUSSION
Every year the City considers streets that are
in poor condition to be rehabilitated or
reconstructed. For the 2016 Street
Reconstruction Project, staff is proposing to
reconstruct approximately 1.1 miles of
streets. The street segments within the
proposed project were identified by the
City's Pavement Management software, site
investigations and utility problems in the
area.
Website The proposed project is in the Minnewashta
www.ci.chanhassen.mn.us Manor neighborhood in the northwest corner
of the city.
G: \ENG \PUBLIC\ 2016 PROJECTS \16 -01 Street and Utility Reconstruction \Communication\20151214 proj 16 -01 accept feasibility.doc
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
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G: \ENG \PUBLIC\ 2016 PROJECTS \16 -01 Street and Utility Reconstruction \Communication\20151214 proj 16 -01 accept feasibility.doc
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
Paul Oehme
2016 Street Reconstruction Project
December 14, 2015
Page 2
The streets in this project area were constructed in 1971 and 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 indicate 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.
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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. High back, B -618 curb is proposed to be installed
in this area if adequate storm water rate, volume and water quality features can be incorporated into
the design.
Water Main Improvements
The water main in this area is either cast or ductile iron pipe. Locations of the documented breaks are
shown on the graphic below. Staff proposes to replace the water main with PVC water main. All
G: \ENG \PUBLIC \_2016 PROJECTS \16 -01 Street and Utility Reconstruction \Communication\20151214 proj 16- Olaccept feasibility.doc
Paul Oehme
2016 Street Reconstruction Project
December 14, 2015
Page 3
services would also be replaced. Alternatives to open cut installation, such as pipe bursting and
directional drilling, will be bid as a potential cost - saving measure.
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Sanitary Sewer Improvements
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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 94 and under the north -south
section of Washta Bay Road. The Utility Department will pothole the force main and verify the
condition of the pipe. An anode bag will be added to act as a sacrificial material to prolong the life of
the force main.
G: \ENG\PUBLIC\ 2016 PROJECTS \16 -01 Street and Utility Reconstruction \Communication\20151214 proj 16 -01 accept feasibility.doc
Paul Oehme
2016 Street Reconstruction Project
December 14, 2015
Page 4
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Storm Sewer Improvements
The existing corrugated metal pipe within the Washta Bay Road and Sandpiper Trail right of way is
in poor condition and proposed to be abandoned. Reinforced concrete pipe is proposed to be installed
within these streets.
The project area is developed, therefore, there is minimal space to provide traditional stormwater
management, namely treatment ponds. The feasibility study includes the following alternatives:
1) Restoring the wetland located in the SE corner of Sandpiper Trail and Piper Ridge Lane.
2) Raingardens along Washta Bay Road.
3) A grit chamber at the 90 degree bend in Washta Bay Road, and another at the intersection of
Tanagers Lane, Tanagers Point and Sandpiper Trail.
G: \ENG \PUBLIC\ 2016 PROJECTS\16 -01 Street and Utility Reconstruction \Communication\20151214 proj 16 -01 accept feasibility.doc
Paul Oehme
2016 Street Reconstruction Project
December 14, 2015
Page 5
Private Small Utilities
There are overhead private utilities within the project area. The private utility companies will be
notified of the proposed project. In 2012, the estimated cost to convert the overhead utilities to
underground in the Minnewashta Heights neighborhood was $5,000 per property. Given the
additional cost to property owners staff will not pursue underground conversion.
An open house was held November 18, 2015 to discuss the proposed project and to answer questions;
approximately 20 people attended. All of the residents' questions were answered at the meeting
and /or with a follow -up after the meeting.
The feasibility report was prepared by WSB and Associates. A copy of the feasibility report is
available in the Engineering Department.
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:
G: \ENG \PUBLIC\ 2016 PROJECTS\16 -01 Street and Utility Reconstruction \Communication\20151214 proj 16 -01 accept feasibility.doc
Paul Oehme
2016 Street Reconstruction Project
December 14, 2015
Page 6
Funding Source
Feasibility
Estimate
Budget
Revolving Assessment Fund
$1,400,900
$1,560,000
Stormwater 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
$2,885,000
The estimated costs include 10% contingency and 11% indirect costs.
A portion of the storm sewer within Washta Bay Road conveys drainage from State Highway 7. Staff
will request that MNDOT 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:
Public Hearing; Authorize Preparation of Plans and Specifications January 25, 2016
Approve Plans and Specifications; Authorize Advertisement for Bids February 22, 2016
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
G: \ENG\PUBLIC\ 2016 PROJECTS \16 -01 Street and Utility Reconstruction \Communication\20151214 proj 16 -01 accept feasibility.doc
Projects By Funding Source 2015 thru 2019 Department Street Improvements
City of Chanhassen, MN Contact Paul Oehme
Project # ST-012
Project Name Annual Street Improvement Program
Account #1 601-xxxx4753
Account 42
Account #3
Account 94
Type Improvement
Useful Life Unassigned
Category Streets/Highways
Priority n1a
Description Total Project Cost: $22,769,500
Annual project to rehabilitate and reconstruct streets in the City. Current 5-year plan shows the following neighborhood areas:
2015 - Carver Beach area (south and west of Carver Beach Road)
MSA - Kerber Blvd overlay (north of West 78th Street) and Dakota Ave (Hwy 5 to Lake Dr E)
2016 - North Manor Road, Washta Bay Road, Tanagers Lane, Sandpiper Trail, Piper Ridge Lane and Minnewashta Woods Drive
MSA - Park Road overlay and Park Place
2017 - Flamingo Drive area, Ches Mar Drive, Lone Cedar and Saddlebrook Pass neighborhood
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 Par",2y overlay
Justification
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 sement is planned to be constructed along with the 2017 MSA street reconstruction.
Prior
Expenditures
2015
2016
2017
2018
2019
Total
Construction
3,250,000
2,460,000
3,022,400
1,687,300
2,654,800
13,074,500
Total
Total
3,250,000
2,460,000
3,022,400
1,687,300
2,654,800
13,074,500
Prior
Funding Sources
2015
2016
2017
2018
2019 =ti
Total
Assessment/Revolving
1,850,000
1,560,000
1,622,400
1,687,300
1,754,800
8,474,500
t-lbbuz>b FUT)U
Total
MSA
1,400,000
900,000
1,400,000
900,000
4,600,000
Total
3,250,000
2,460,000
3,022,400
1,687,300
2,654,800
13,074,500
Budget Impact/Other i
This project may decrease maintenance costs
88
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 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
1,225,000 construction
"Total
2016 2017
300,000 75,000
2018 2019
200,000 75,000
2020 Total
200,000 850,000
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
i
City of Chanhassen, MNT
Project 4 SS-014
Project Name Sanitary Sewer Replacement
2015 thi•ii 2019
Department
Sanitaiy SeNver Improvements
Contact
Paul Oehmc
Type
Improvement
Useful Life
Unassigned
Category
Utilities
Account #1 701-7025-4751 Account 43 Priority n/a
Account #2 Account #4
Description Total Project Cost: $1,640,000
Zeplacement 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.
PHOT Expenditures
Construction
Total
2015 2016 2017 2018 2019 Total
75,000
300,000
40,000
250,000
50,000
715,000
Total 75,000
300,000
40,000
250,000
50,000
715,000
This project will decrease maintenance costs.
M
Projects By Funding Source 2015 thru 2019 Department Water System Irnprovements
City of Chanhassen, MN Contact Paul Ochnie
Project tt W-024
Project Name Watermain Replacement
Account4I 700-7025-4751
Account a2
Account #3
Account#4
Type
Improvement
Useful Life
Unassigned
Category
Utilities
Priority
n/a
Total Project Cost: $4,270,000
,ment of existing water main lines incoordination with the reconstruction of the City street projects or minor fixes o f water distribution
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.
Budget Impact/Other
rhese projects will decrease maintenance costs.
ill
Prior
Expenditures
2015
2016
2017
2018
2019
Total
F-4375,0001
Construction
125,000
825,000
75,000
770,000
100,000
1,895,000
'rotai
Total 125,000
825,000
75,000
770,000
100,000
1,895,000
Prior
Funding Sources
2015
2016
2017
2018
2019
Total
F77,375:0:00:]
Water Utility Fund
125,000
825,000
75,000
770,000
100,000
1,895,000
Total
Total 125,000
825,000
75,000
770,000
100,000
1,895,000
Budget Impact/Other
rhese projects will decrease maintenance costs.
ill
CITY OF CHANHASSEN
CARVER AND HENNEPIN COUNTIES, MINNESOTA
DATE: December 14, 2015 RESOLUTION NO: 2015 -XX
MOTION BY:
SECONDED BY:
A RESOLUTION ACCEPTING FEASIBILITY STUDY AND
CALLING THE PUBLIC HEARING FOR THE 2016 STREET
RECONSTRUCTION (MINNEWASHTA MANOR AREA)
PROJECT NO. 16-01
WHEREAS, pursuant to resolution of the Council adopted August 24, 2015, a report has been
prepared by City staff with reference to the above - referenced project, and this report is being received
by the Council on December 4, 2015, and
WHEREAS, the report provides information regarding whether the proposed project is
necessary, cost - effective, and feasible.
NOW, THEREFORE, BE IT RESOLVED by the Chanhassen City Council:
1. The Council will consider the improvement of such project in accordance with the report and the
assessment of abutting properties for a portion of the cost of the improvement pursuant to Minnesota
Statutes, Chapter 429 at an estimated total cost of the street improvements of $1,400,900.
2. Public hearing for the proposed improvements within the 2016 Street Reconstruction (Minnewashta
Manor Area) Project No. 16 -01 shall be held on January 25, 2016 in the Council Chambers of City Hall
at 7:00 PM.
The clerk shall give mailed and published notice of the hearing and improvement as required by law.
Passed and adopted by the Chanhassen City Council this 10 day of December, 2015.
ATTEST:
Todd Gerhardt, City Manager
Denny Laufenburger, Mayor
YES NO ABSENT