4.a)1) Bolton & Menk Report for Pilar, Perkins, Paris, and Penfield Street Improvements : �
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PREMILINARY SUMMARY REPORT
PILAR ROAD, PERKINS AVE, PARIS AVE, AND PENFIELD AVE—STREET IMPROVEMENTS
CITY OF SCANDIA, MN
JULY 2013
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Pilar Road, Perkins Ave, Paris Ave, and Penfield Ave Street Improvements
City of Scandia, MN Page 1
SUMMARY
The following report has been prepared for discussion at the July 2013 City Council Workshop to present
information regarding Pilar Road, Perkins Ave, Paris Ave, and Penfield Ave. These adjoining roadways
are located north of Hwy 97 and in between County Round 3 (Olinda Trail) and Trunk Highway 95.
Within this preliminary report information contains a summary of existing road conditions, suggested
improvements, and an opinion of project costs.
BACKGROUND & EXISTING CONDITIONS
The roadway network that will be discussed within this report consists of approximately 2.41 miles. As
represented in the attached Figure No. 1, the road segments are broken out into the following Parts:
Part A—Pilar Road (CR 3 to Perkins Ave) .68 miles
Part B—Pilar Road (Perkins Ave to TH 95) .92 miles
Part C—Paris Ave (gravel portion) .48 miles
Part D— Perkins Avenue .24 miles
Part E—Penfield Avenue .09 miles
The existing gravel widths of the roadways outlined above vary throughout the length of the roadways,
some spots measure as narrow as 14' and as wide as 28'. Along with the variable widths throughout the
roadways, several horizontal curves are also present. Combination of these two attributes imposes sight
distance safety concerns and complications with routine maintenance and snow plowing. Areas of
erosion and "gravel washouts" are also present and impose environmental concerns with water quality
runoff. Routine ditch maintenance is difficult to perform in a majority of the roadway ditches because
tree overgrowth has consumed the area that ditching is needed.
The City's gravel roads require much more frequent maintenance than paved roads, especially after wet
periods and when accommodating increased traffic. Wheel motion shoves material to the outside,
leading to rutting, washouts, and eventual road destruction if not maintained or supplemented with
addition aggregate. Segments of gravel roads with steeper slopes and grades also rut easily as a result
of flowing water. Washboarding has also occurred within this area of gravel roadways. Washboarding
can become severe enough to cause vibration in vehicles so that bolts loosen or cracks form in the
vehicle components.
Although well-constructed and graded gravel roads are suitable for driving speeds, driving on them
requires far more attention to variations of the surface and it is easier to lose control than on a paved
road. In addition to potholes, ruts, and loose stone or sandy ridges at the edges or in the middle of the
road, other problems associated with gravel roadways include; larger stones cutting and puncturing tires
or being thrown up by the wheels and damaging the underside, stones skipping up hitting vehicle lights
or windshields when two vehicles pass, dust thrown up from passing vehicles reducing visibility, and
increased tire wear.
Pilar Road, Perkins Ave, Paris Ave, and Penfield Ave Street Improvements
City of Scandia, MN Page 2
RECOMMENDED SCOPE OF WORK
A visual inspection of the roadways has been completed and from that observation the following list of
recommendations have been prepared to construct the road to Engineering Standards.
• The City will have to work with the property Owners upon completion of the proposed work of
the newly constructed roadway to ensure the completed roadway will be within platted City
right-of-way. Currently a majority of the gravel roadways are located on properties that are
recorded to the adjacent property owners. The City has maintained the roadways well past the
6 years requirement, so by State Statue a prescriptive right-of-way exists.
• Clearing and Grubbing/Tree trimming work will be completed to ensure access to the ditches for
future maintenance work,driver safety, and in areas the roadway widths need to be increased
or slightly realignment work is required.
• Overall the sub-grade seems to be in relatively good condition for a gravel roadway. It is
anticipated some areas will require sub-grade correction to ensure the base of the roadway is
stable for the construction of the bituminous pavement.
• Narrow roadway widths will be constructed to allow for a 24 foot wide pavement as part of the
project. Areas with over ally sharp curves will be realigned slightly to improve the horizontal
curves as well.
• Drainage improvement will be required within this project to correct areas creating erosion but
also to full-fill the requirements of the local Watershed District. In areas of steep embankment
material concrete curb and gutter will be installed where necessary and also in locations where
storm water needs to be directed to drain into constructed water quality enhancements that
shall be identified through the design process.
• Recommended to place an additional 2" of gravel aggregate base over the roadway prior to
paving to provide additional strength, better gradation mixture, and to provide a crown in the
roadway to ensure adequate drainage. Additional investigation of the existing roadway bed
shall be completed by performing soil borings before the final roadway section can be verified.
• It's recommend the pavement section follow the Engineering Standards, unless soil borings
support differently. The bituminous section of the roadway will be constructed with 2.5 inches
of bituminous non-wearing course and 1.5 inches of bituminous wearing course, and will be
constructed to a width of 24 feet width.
• In areas possible, a 2 foot shoulder on each side of the roadway shall be constructed with
aggregate material.
• Street signs and advisory signs will be removed and replaced with signs that meet the current
sign standards. Pavement markings will also be completed with this project. The pavement
markings will consist of a centerline and edge striping.
Pilar Road, Perkins Ave, Paris Ave, and Penfield Ave Street Improvements
City of Scandia, MN Page 3
OPINION OF PROBABLE COSTS
The following opinion of probable project costs have been estimated as shown below. These estimates
include: construction costs, project contingencies, legal, administrative, engineering, and permits.
Part A—Pilar Road (CR 3 to Perkins Ave) $421,000
Part B—Pilar Road (Perkins Ave to TH 95) $581,000
Part C—Paris Avenue (gravel portion) $305,000
Part D—Perkins Avenue $160,000
Part E—Penfield Avenue 56 000
Total Estimated Project Costs $1,523,000
CONCLUSIONS
• Review and discuss this report at the July 2013 City Council Workshop
• Schedule informal neighborhood meetings to discuss the proposed improvements
• If a consensus is reached and funding can be identified, the City Council can proceed with the
project, and shall include the following next steps but not limited to, ordering soil borings,
ordering survey work, and order a Feasibility Report.
Pilar Road, Perkins Ave, Paris Ave, and Penfield Ave Street Improvements
City of Scandia, MN Page 4
NEW SCANDIA TOWNSHII' BITUMINOUS SURFACING POLICY
FOR EXISTING GRAVEL ROADS
FEBRUARY 19,2002
1. GOALS
A. Al] Collector Roads and nearly all Non Collector Roads shall be Bituminous Surfaced.
(1) Cheaper to maintain
(2) Better road surface
(3) Safer
B. No more than two(2) Bituminous Bonds at any one time.
C. Minimum of two(2)miles/year ar ten (10)milesl5 years.
II. BITUMINOUS STANDARDS
A. All bituminous surfaced roads within the Township shall be constructed to a
minimum of six inches(6) inches of Class 5 gravel and three(3) inches bituminous
surfacing. The bituminous surfacing shall be installed in two lifts of one and one half
inches each according to a schedule approved by the Township Engineer. A more
stringent road design may be required for Collector roads upon recommendation of
the Township Engineer.
B. In all cases, Collector Roads should be 24 feet wide.
C. Non Collector Roads shall be minimum of 20 feet wide. The Town Board may allow
a variance under special conditions.
D. Township Standards Road Section is 24 feet with 2 feet gravel shoulders on each side,
but in some cases it may be necessary to reduce these.
E. In some cases it may be necessary for the Town Board to review further on an
individual basis where special conditions exist.
III. Assessments
A. Formulas
(]) Total Bituminous Surfacing Cost divided by total assessable units=cost/unit
(2) CosUUnit x 0.25 = Collector Road Assessment
(3) Cost/ilnit x 0.75 =Non Collector Assessment
B. Definitions
(l) Assessable unit is an existing home site or buildable site.
(2) Collector Road and Non Collector Road shall be defined by New Scandia Road
Classification Map '
(3) Special Situations-township could pay 100% if the township benefits from the
project
(4) Corner Lot Assessment is '/z assessment on side without main driveway
Plus one(1)assessment on side with main driveway.
(5) No assessment on resurfacing or maintenance
IV. FACTORS TO CONSIDER WHEN A ROAD MAY BE SURFACED
A. Road has been properly petitioned prior to township consideration for bituminous
Surfacing. Petition must have 35% of the abutting property owners.
B. Road has been built to township specifications.
C. Road committee recommends improvements.
D. Where a Collector Road is surfaced all Non Collector Roads entering on to that
Collector Road should be surfaced.
E. Ease of road maintenance. Bituminous surfaced road should not be left between
gravel surfaced roads.
F. The Town Board must attempt to keep good ratio of Collector Roads and Non
Collector Roads in each Bituminous Surfacing Project.
(1) Keep assessments as even and fair as possible on all Bituminous Surfacing.
(2) This complies with the Comprehensive Plan.
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LEGEND
PART A �
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PART B •
PART C �
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PART D � � SC ndia Tr I-Hi- h ay 7
PART E ��
SCALE
BOLTON 8� MENK, �NC. CITYOFSCANDIA, MINNESOTA
Consulting Englnsers dc surveyors PILAR, PARIS,PERKINS&PENFIELD
MANKATO,MN FAIRMONT,MN SLEECYEYE,MN BURNSVILLE,MN
WILLMAR,MN CHASI(A,MN RAMSEY,MNMIIPLEWOOD,MN STREETIMPROVEMENTS
BA%TER,MN ROCHESTER,MN AMES,IA SVENCER IA
r��;a�3oza..Psnavzwv� UBMm6MenAIrc.101].ANRgMSResmed IULY,2011 FIGURENO.l