1c. Pavement Inventory 1
CITY O --
1 • CHANHASSEN
690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317
(612) 937-1900 • FAX (612) 937-5739
IMEMORANDUM brlorsM_ 1°/' N.A.41
TO: Don Ashworth, City Manager = °l`._
_10 -3
IFROM: Gary Warren, City Engineer wt-" ,
DATE: October 3, 1990
IISUBJ: Accept Pavement Inventory Proposal from OSM
File No. PW167
As directed by Council during the Frontier Trail reconstruction
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project , staff is in the process of compiling a street inventory
1 for all City streets. This is the first step in achieving the
ultimate goal of determining the total dollar needs for
maintenance and upgrade of all City streets . Armed with this
I figure, the City will be better able to decide what portion of
road reconstruction projects should be assessed to
abutting/benefitting property owners and what portion should
I likewise be covered by the City ' s general fund or some other
dedicated fund for this purpose.
A key element of the inventory is to physically inspect every
I mile of the City' s system. This is done by experienced personnel
to evaluate the roadway surface and to determine its repair needs
and life expectancy. It is suggested that this system inventory
I be done once per year for the first three years in order to
accurately establish where each road segment exists in its life
cycle. This is especially necessary in a City such as Chanhassen
where traffic counts continue to increase with the increased
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residential and commercial development. After the three-year
program is complete, the inventory can be done every other year
or a half-system per year. The City currently has approximately
I 90 miles of roadways in its jurisdiction. In 1985 we had 65
miles of roadway.
1 In order to update Engineering Department staff on the latest
inspection criteria and to help with establishing the
rehabilitation strategies and cost criteria, staff is
recommending the use of the firm of Orr-Schelen-Mayeron (OSM) who
Ihas expertise in this area and can assist at a reasonable cost.
The roadways can be inventoried at an average rate of
IIapproximately 1 mile per hour and we therefore are looking at
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Don Ashworth
October 3 , 1990
Page 2
approximately 87 hours work of actual field inventory.
Alternative No. 1 of the attached OSM proposal will utilize City
staff in a support/training role such that future year
inventories will be done totally by City staff . In this regard,
Assistant City Engineer Charles Folch and Engineering Technician
Dan Remer will share the duties in supporting the consultant on
' this matter. Staff should be qualified after the initial 70
miles of inventory to complete the system inventory without
further consultant assistance. Some of the consultant ' s time
' will also be utilized to help with establishing the database for
the software package which we have acquired for this purpose .
Funding for the endeavor is contained in Special Revenue Fund No.
211-233 , Street/Pavement Management.
It is therefore recommended that the City Council accept
Alternative No. 1 of the OSM proposal for street inventory
' assistance in the amount of $4, 830 .
ktm
IAttachment: Proposal from OSM dated September 13,1990.
c: Charles Folch, Assistant City Engineer
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Orr
Schelen
Mayeron&
Associates,Inc.
2021 East Hennepin Avenue
Minneapolis,MN 55413
September 13, 1990 612-331-8660
FAX 331-3806
Engineers
Surveyors
Planners
City of Chanhassen
690 Coulter Drive
Chanhassen, MN 55317
Attn: Mr. Gary Warren, P.E.
Public Works Director
Re: Pavement Management 1
OSM Proposal No. 0232-90
Dear Mr. Warren: 1
Thank you for the opportunity to present this proposal to you for providing pavement
management services to the City of Chanhassen. 1
Our proposed services, as described below, are based on information from our previous
discussions on pavement management. Our goal is to provide the engineering staff of
the City of Chanhassen a street pavement inventory. A street inventory will identify types
and levels of pavement distress, deterioration and failure of the street pavements.
The pro osal is based on tho following information from our previous discussions on
pavement management:
1. The City of Chanhassen has approximately 70 miles of streets to inventory.
2. The information obtained by field survey will be placed on forms which we
will provide.
3. The forms are based on using the Flexible Pavement Management System
(FPMS), a software package 3roduced by the Federal Highway
Administration and CALTRANS,'and provided through McTRANS. The
forms and field survey data are broadly generic in nature and can be used
with most software packages available. ,
4. The field survey data will be entered into your IBM compatible computer by
City personnel from the forms which we will provide. ,
5. The estimated costs as detailed below are based on the projecti`eig
completed this fall.
SEP 11
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I Mr. Gary Warren
September 13, 1990
Page 2
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The following two alternative estimates can be discussed prior to the beginning of the
Iproject and may be adjusted during the project to conform to your budgetary constraints.
Alternate No. 1 - OSM and Chanhassen Personnel Completing the Inventory: This
Ialternative would be based on Dave Mitchell, P.E., of OSM, completing the inventory of
the City street network along with City personnel.
1 The most efficient method of obtaining the inventory is for two people to work together
and physically inspect all of the streets. Dave would train personnel from your office (up
to two people), in identification of pavement distresses. This training and subsequent field
survey would involve only Dave from OSM and at least one person at all times from the
City. The estimated hours are based on Dave being present for the entire inventory.
1 The estimated cost of this alternative is broken down as follows:
1 ESTIMATED ESTIMATED
TASK HOURS HOURLY COST TOTAL COST
I P.E. Providing Inventory 64 $ 70.00 $ 4,480.00
plus Inventory Training
I P.E. - Training, Coordinating,
Communication Re: Software 5 $ 70.00 $ 350.00
ITotal Estimated Cost $ 4,830.00
I Alternate No. 2 -OSM Completing Inventory with all OSM Personnel: This alternative
re time to mp!ete
would proviue ti le vi'iy with an; oNiiori if y�;u ,,,,�i jii�i.i. .tafi dcss not : :.. ..,,time to � .r �..,
the pavement inventory this fall. OSM would provide you with a P.E. and a Technician
' that would totally complete the inventory. The tasks are broken down as follows:
ESTIMATED ESTIMATED
I TASK HOURS HOURLY COST TOTAL COST
Complete Inventory 58 $119.00 $ 6,902.00
1 P.E. - Training, Coordination of
1 Software 5 $ 70.00 $ 350.00
ITotal Estimated Cost $ 7,252.00
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Mr. Gary Warren
September 13, 1990
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The training provided under Alternate No. 1 would allow the City staff to complete the
street inventory in the future. It is important to note that a complete inventory is
recommended every other year, and it is suggested that the inventory be completed each
year during the first three years to assure that a similar objective judgement is used in the
identification of pavement stress.
The costs and tasks outlined above would be invoiced to the City on an hourly basis at
the direction of your office. There are many variables involved in this estimate and as
stated is based on 70 miles of street. Additional cost estimates can be provided to the
City for any additional work, training or inventory requested beyond the above listed
tasks. The above mentioned cost estimates should not be interpreted as maximum costs.
We will make every effort to keep you informed of our costs as the project progresses.
Thank you again for the opportunity to provide our services to you. Please call me at 1
378-6377 if you have any questions.
Respectfully,
ORR-SCHELEN-MAYERON
& ASSOCIATES, INC.
,lakiPoadezkA
Bud Osmundson, P.E. John P. Badalich, P.E.
Project Manager Vice President ,
HCO/JPB/cmw
09/90-coc.gw
cc: Dave Mitchell, OSM
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