CITY OF WARRENVILLE MEMO - PDF Free Download

CITY OF WARRENVILLE MEMO TO: Mayor, City Council, and City Administrator Coakley FROM: Senior Civil Engineer Hocking SUBJECT: PREFERRED ALTERNATIVE FOR MACK ROAD BIKE PATH PROJECT DATE: May 3, 2017 The purpose of this memorandum is to i. provide a brief description of this project; ii. summarize the alternatives analysis and cost estimates, iii. recommend the preferred alternative, and iv. Outline next steps. Mack Road Bike Path Phase I Engineering Study In December 2015, The City was awarded Surface Transportation Program (STP) funding for 75% of construction and phase III / construction engineering costs to install a new asphalt path along Mack Road between Route 59 and McKee Marsh. Preliminary project costs were estimated at $751,531 ($683,210 construction and $68,321 construction engineering). The local cost share for construction and construction engineering was $187,883 ($170,803 construction and $17,080 construction engineering). The City has executed an Intergovernmental Agreement with the Forest Preserve District of DuPage County (FPD) that has defined the City s ability to install a path on Forest Preserve District property, local costsharing responsibilities (70% City, 30% FPD) and longterm ownership and maintenance responsibilities for the proposed infrastructure. The proposed improvements include pedestrian signal modifications at the intersection of Route 59 and Mack Road, a 10 asphalt path, a pedestrian bridge over the West Branch of the DuPage River, and a connection to the existing West Branch Regional Trail. This project will benefit residents by making it safer and easier to cross Illinois Route 59 and access the regional trails to which this project will connect. The City hired Engineering Resource Associates (ERA) to prepare the preliminary engineering design, environmental studies, preliminary plans and public coordination. To date, there has been a kickoff meeting with City, FPD, and Township staff and consultants as well as a meeting to discuss the Alternatives Analysis ERA prepared for the project. Alternatives Analysis ERA s Alternatives Analysis report (Exhibit A) evaluated the feasibility, costs, and benefits of the following three alternative trail configurations:

Preferred Alternative for Mack Road Bike Path Project May 3, 2017 Page 2 of 2 Alternative 1 OnStreet Bike Lanes Alternative 2 South Side Trail with Prefabricated Bridge Alternative 3 North Side Trail with WideninKind Bridge Alternative 1 includes onstreet 5foot wide bike lanes along each side of Mack Road including a midblock crossing to the McKee Marsh parking lot. Road widening, ComEd pole relocation and easements are included as part of the scope. No bridge modifications are necessary. The cost estimate is $576,800 and is within the original grant budget. Alternative 2 includes a 10foot wide asphalt bike path along the south side of Mack Road. Impacts to Class IV Forest Preserve property, dog park/canoe launch modifications, gas utility line conflicts a new prefabricated trail bridge and a midblock crossing are included as part of the scope. Mack Road would not need to be widened to accommodate the new trail. The cost estimate for this alternative is between $1,193,400 to $1,343,400 and will require a STP grant resubmittal. Estimated local costs for construction and construction engineering will approximately double to between $328,185 and $369,435. Alternative 3 includes a 10foot wide asphalt bike path along the north side of Mack Road. ComEd pole relocation, easements, and a widening of the existing Mack Road bridge are included as part of the scope. Mack Road would not need to be widened and a midblock crossing is not necessary. The cost estimate is $947,146 and will require a STP grant resubmittal. Estimated local costs for construction and construction engineering will increase to $260,465. The City s share will increase $50,808 to approximately $182,326 (70%). Also, the estimated Phase II Final Engineering consultant costs will most likely increase due to the increased construction costs. The FY18 budget includes sufficient funding to cover the City s projected share of increased Phase II costs. Recommended Alternative and Next Steps The Forest Preserve District (Exhibit B) and Winfield Township (Exhibit C) provided position memos identifying Alternative 3 as their preferred alternative. At the April 12 Bicycle and Pedestrian Advisory Commission (BPAC) meeting, the Commission unanimously recommended Alternative 3. The project will require a resubmittal of the STP grant application in early August due to the increase in construction cost. Also, since this alternative affects residential properties along the north side of Mack Road, staff recommends the City hold a public information and input meeting on the proposed project prior to the grant resubmittal. Staff Recommendation Staff recommends the City Council approve the Alternative 3 as the City s Preferred Alternative and direct staff to: i.) Hold a public information and input meeting on the project; and ii.) Reapply for STP grant funding for the project in early August.

MACK ROAD ALTERNATIVE TRAIL ALIGNMENT NARRATIVE ALTERNATIVE 1 ONSTREET BIKE LANES Trail Alignment Improvements include two separate 5foot wide, bike lanes along Mack Road, extending approximately 1590 feet from IL Route 59 to the Blackwell McKee Marsh Parking Lot. The bike lanes will begin at the IL Route 59/Mack Road intersection where existing bike detection is provided at the signalization intersection. The current bike detection will direct users from the west side of IL Route 59 onto Mack Road to the proposed bike lanes. From the intersection, the bike lanes will continue along Mack Road until it enters the property owned by the FPDDC known as the Blackwell McKee Marsh, at which point the trail will become a twoway asphalt trail that crosses the drive aisle (between the roundabout and the parking lot), and then connects to the existing gravel trail just north of the Blackwell McKee March Parking Lot. Cross sections AA, BB, CC and DD have been provided to show the typical profile at several critical sections along the corridor. Roadway Modifications Proposed widening will take place beginning at 29W700 Mack Road (PIN No. 0422303003) and terminating near the entrance to the FPDDC Dog Park (PIN No.0422305001). The existing roadway, featuring two 11foot lanes and 1foot gravel shoulders, will be modified to two 12foot lanes with two 5foot bike lanes one on the north and one on the south side of Mack Road. The new cross section will be restriped to delineate the bike lanes. Bridge Modifications Proposed improvements include restriping the vehicular lanes to accommodate the onstreet bike lanes over the bridge. A 5 foot wide bike lane will be provided on both the north and south side of the bridge, and the vehicular lanes will remain as 12 feet wide. The proposed improvements include a new concrete wearing surface and new steel railings on either side to account for the required railing height of 4 6. Cross section CC has been provided to show a typical section at the bridge. Impacts to Adjacent Properties Privately Owned Parcels Along the north side of Mack Road, several decorative pillars, landscape boxes and fences placed within the rightofway may need to be removed or relocated to accommodate the proposed roadway widening and trail. The affected properties include the following: 29W700 MACK ROAD (Pin No. 0422303003) one address marker 29W660 MACK ROAD (Pin No. 0422303004) one decorative landscape box 29W630 MACK ROAD (Pin No. 0422303005) two decorative pillars and wooden fencing 29W606 MACK ROAD (Pin No. 0422303006) two decorative pillars and wooden fencing 29W530 MACK ROAD (Pin No. 0422304003) two decorative pillars Additionally, a temporary easement and a permanent rightofway easement will need to be acquired from the property owner at 29W530 Mack Road (Pin No. 0422304003) for construction of the proposed trail.

Mack Road Bike Trail ERA Project No. 161119.00 February 15, 2017 Revised 4/7/17 Potential Utility Conflicts Existing 3phase overheard wires and poles owned by ComEd extend throughout the project limits along the northern line approximately 20 feet north of the existing centerline of Mack Road on the west side of the West Branch, and approximately 25 feet north of the existing centerline of Mack Road to the east of the West Branch. Pole relocation and coordination with ComEd may be necessary in order to accommodate the proposed roadway widening and bike lanes. Pedestrian Crossing & Signalization at the IL Route 59/Mack Rd. Intersection The proposed bike lanes will cross IL Route 59 using previously installed bike detection for the west and east legs of the intersection. As a result, pedestrian signals are not proposed as part of this alternative. Traffic signal improvements at the intersection would be limited to new pavement markings and new loop detection to accommodate the bike lanes. Coordination with District 1 traffic section will be required for traffic signal modification and work within the rightofway along IL Route 59. Alternative #1 Cost Opinion $576,800

Mack Road Bike Trail ERA Project No. 161119.00 February 15, 2017 Revised 4/7/17 ALTERNATIVE 2 SOUTH SIDE TRAIL WITH PREFABRICATED BRIDGE Trail Alignment A 10foot wide asphalt bike trail, approximately 2470 linear feet, is proposed to run along the south side of Mack Road from IL Route 59 to the Blackwell McKee March Parking Lot. The trail will begin at the IL Route 59/Mack Road intersection where pedestrian signalization is proposed at the southwest corner to safely direct users from the existing sidewalks along Mack Road to the proposed trail. From the intersection, the trail will continue along the south side of Mack Road. The trail will be located as close to the Mack Road rightofway as possible in order to meet ADA slope requirements and the buffer requirements adjacent to a public roadway. Encroachments onto the FPDDC property and the need to remove trees will be minimized. The trail will cross the West Branch of the DuPage River and run parallel to the FPDDC Dog park parking lot. At this point, striping and passive signage will be provided to alert vehicles to the pedestrian crossing.as it enters property on the north side of Mack Road owned by the FPDDC known as the Blackwell McKee Marsh, at which point it will meander around the existing roundabout and then connect to the existing gravel trail just north of the Blackwell McKee Marsh Parking Lot. Alternative options are considered for the improvements adjacent to the existing dog park/canoe launch area. Cross sections AA, BB, CC and DD have been provided to show the typical profile at several critical sections along the corridor. Roadway Modifications With the exception of pavement markings for the crossing, there are no anticipated roadway modifications. Pedestrian Bridge To accommodate a 10foot path the clear width on the pedestrian bridge shall be 14feet unless a design variance is pursued. It is anticipated that the prefabricated pedestrian bridge will be constructed approximately 5 feet south from the existing Mack Road bridge structure and span approximately 150feet long. The span was set to ensure that when the existing bridge (SN 0223027) is replaced there will be no conflict with the pedestrian bridge. The superstructure height is anticipated to be approximately 3 6, but is subject to refinement during the design phase. Additionally, the bottom chord will not be lower than the low beam on the bridge. Cross section CC has been prepared to show the existing versus proposed typical section at the bridge. Impacts to Adjacent Properties Class IV Parcel (FPDDC property PIN No. 0422305001) The proposed trail will meander through both the rightofway and the northern part of the FPDDC property on the south side of Mack Road. As a result, several trees will need to be removed to clear a path for the proposed trail. It is understood that this property is a Class IV woodland area with rigid restrictions on the removal of vegetation, and a result, all efforts will be made to remove only those trees within the footprint of the trail and immediate surroundings areas in order to preserve as many trees as possible. Dog Park/Canoe Launch Modifications (FPDDC property PIN No. 0422305001) OPTION A Modifications include shifting the existing gravel boat launch and gravel roundabout approximately 20 feet to the south to provide adequate space for the proposed trail alignment just east of the West Branch. The existing entrance, driving aisle and parking stalls servicing the dog park will remain unaltered.

Mack Road Bike Trail ERA Project No. 161119.00 February 15, 2017 Revised 4/7/17 OPTION B Proposed modifications include a realignment of the several dog park facilities including the driving aisle, parking stalls, boat launch and the roundabout. The proposed alignment of the new driving aisle and parking configuration would be oriented parallel to Mack Road, and the boat launch and roundabout would be shifted south approximately 30 feet to provide additional space for the proposed trail. As a result, the fenced in "play area" adjacent to the existing parking lot would also be reconfigured to accommodate the proposed parking lot improvements. Potential Utility Conflicts An existing 8" gas line is located with the rightofway along the south side of Mack Road along the length of the project. Conflicts are not anticipated, however, coordination with Nicor Gas may be required. Pedestrian Crossing & Signalization at the IL Route 59/Mack Rd. Intersection The proposed trail will cross IL Route 59 at the southeast corner of the intersection where it will connect to an existing sidewalk on the south side of Mack Road (west of the intersection). Pedestrian signals will be installed at the southeast and southwest corners of the intersection to accommodate trail users, and the traffic signals will be modified to provide adequate time for crossing IL Route 59. Coordination with IDOT traffic section will be required for traffic signal modification and work within the rightofway along IL Route 59. Alternative #2 Cost Opinion Option 1 w/ Boat Launch Modification $1,193,400 Option 2 w/dog Park Modification $1,343,400

Mack Road Bike Trail ERA Project No. 161119.00 February 15, 2017 Revised 4/7/17 ALTERNATIVE 3 NORTH SIDE TRAIL WITH WIDENINKIND BRIDGE Trail Alignment A 10foot wide asphalt bike trail, approximately 2290 linear feet, is proposed to run along the north side of Mack Road from IL Route 59 to the Blackwell McKee March Parking Lot. The trail will begin at the IL Route 59/Mack Road intersection where pedestrian signalization is proposed at the southeast, southwest and northwest corner to safely direct users from the existing sidewalks along Mack Road to the proposed trail. From the intersection, the trail will continue along the north side of Mack Road crossing over the West Branch of the DuPage River and continuing along the north side of Mack Road before entering into the Blackwell McKee Marsh. The asphalt trail will extend east around the existing roundabout until it connects into the existing trail just north of the Blackwell McKee Marsh Parking Lot. Cross sections AA, BB, CC and DD have been provided to show the typical profile at several critical sections along the corridor. Roadway Modifications With the exception of pavement markings for the crossing, there are no anticipated roadway modifications. Bridge Modifications Wideninkind the Existing Bridge (SN 0223027) The existing bridge will be widened approximately 9 feet to accommodate the proposed trail alignment on the north side of Mack Road. This bridge widening alternative reduces the roadway clearance from 34 0 to 30 0, but adds a concrete parapet for vehicle and pedestrian protection. The widening is accomplished by the addition of two new deck beams with a 6 inch concrete wearing surface, and new railings. Cross section CC has been prepared to show the existing versus proposed typical section at the bridge. Impacts to Adjacent Properties Privately Owned Parcels Along the north side of Mack Road, several decorative pillars, landscape boxes and fences placed within the rightofway may need to be removed or relocated to accommodate the proposed trail. The affected properties include the following: 29W700 MACK ROAD (Pin No. 0422303003) one address marker 29W660 MACK ROAD (Pin No. 0422303004) one decorative landscape box 29W630 MACK ROAD (Pin No. 0422303005) two decorative pillars and wooden fencing 29W606 MACK ROAD (Pin No. 0422303006) two decorative pillars and wooden fencing 29W530 MACK ROAD (Pin No. 0422304003) two decorative pillars Additionally, a temporary easement and a permanent rightofway easement will need to be acquired from the property owner at 29W530 Mack Road (Pin No. 0422304003) for construction of the proposed trail. Potential Utility Conflicts Existing 3phase overheard wires and poles owner by ComEd extend throughout the project limits along the northern rightofway of Mack Road. Pole relocation by ComEd may be necessary in order to accommodate the proposed trail if the trail cannot be constructed north of the proposed pole west of the river. Pedestrian Crossing & Signalization at the IL Route 59/Mack Rd. Intersection The proposed trail will cross IL Route 59 at the northeast corner of the intersection where it will connect to an existing sidewalk on the north side of Mack Road (west of the intersection). A crosswalk will be provided from the northwest corner of the intersection to the southwest corner where there is an existing sidewalk. Pedestrian signals will be installed at the northwest, southwest and southeast corners of the intersection to accommodate trail users, and the traffic signals will be modified to

Mack Road Bike Trail ERA Project No. 161119.00 February 15, 2017 Revised 4/7/17 provide adequate time for crossing IL Route 59 and Mack Road. Coordination with IDOT traffic section will be required for traffic signal modification and work within the rightofway along IL Route 59. Alternative #3 Cost Opinion $947,146

West DuPage W eb Mapping Application DuPage County, Illinois DuPage County Ph# 1(630)4075000 This map is for assessment purposes only. Information Technology Department / GIS Division Email gis@dupageco.org 421 N County Farm Rd. Sources: Esri, HERE, DeLorme, Intermap, increment P Corp., DuPage GEBCO, Maps Portal: DuPage Maps Portal: ± Wheaton, IL 60187 USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, http://dupage.maps.arcgis.com/home http://dupage.maps.arcgis.com/home Copyright DuPage 2016 METI, Esri China (Hong Kong), swisstopo, MapmyIndia, OpenStreetMap contributors, and the GIS User Community

East DuPage W eb Mapping Application DuPage County, Illinois DuPage County Ph# 1(630)4075000 This map is for assessment purposes only. Information Technology Department / GIS Division Email gis@dupageco.org 421 N County Farm Rd. Sources: Esri, HERE, DeLorme, Intermap, increment P Corp., DuPage GEBCO, Maps Portal: DuPage Maps Portal: ± Wheaton, IL 60187 USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, http://dupage.maps.arcgis.com/home http://dupage.maps.arcgis.com/home Copyright DuPage 2016 METI, Esri China (Hong Kong), swisstopo, MapmyIndia, OpenStreetMap contributors, and the GIS User Community

~ Mack Road 30'0" 30'0" ROW South of CL ROW North of CL 2'0" 11'0" 11'0" 2'0" Existing Roadway Existing Groundline EXISTING SECTION AA ~ Mack Road 30'0" ROW South of CL 30'0" ROW North of CL 2'0" 2'0" 2'0" 5'0" 12'0" 12'0" 5'0" 2'0" 2'0" 2'0" Bikeway Bikeway Existing Roadway Existing Groundline 3:1 3:1 3:1 3:1 $USER$ $DATE$ $TIME$ $FILE$ ENGINEERING RESOURCE ASSOCIATES 3S701 WEST AVENUE, SUITE 150 WARRENVILLE, ILLINOIS 60555 PHONE (630) 3933060 FAX (630) 3932152 Existing 8" Gas DRAWN DESIGNED CHECKED DATE M. LANGE FEBRUARY 2017 ALTERNATE #1 SHARED ROADWAY SECTION AA EXHIBIT A1

~ Mack Road 30'0" ROW South of CL 30'0" ROW North of CL 10'0" 2'0" 6'0" 2'0" 2'0" 2'0" 11'0" 11'0" 2'0" Bike Path Existing Roadway Existing 8" Gas ALTERNATE #2 PEDESTRIAN BRIDGE SOUTH OF EXISTING ROADWAY SECTION AA ~ Mack Road 30'0" ROW South of CL 30'0" ROW North of CL 11'0" 11'0" 10'6" 10'0" 2'0" Bike Path Existing Roadway $USER$ $DATE$ $TIME$ $FILE$ ENGINEERING RESOURCE ASSOCIATES 3S701 WEST AVENUE, SUITE 150 WARRENVILLE, ILLINOIS 60555 PHONE (630) 3933060 FAX (630) 3932152 Existing 8" Gas DRAWN DESIGNED CHECKED DATE M. LANGE FEBRUARY 2017 ALTERNATE #3 WIDENINKIND EXISTING BRIDGE SECTION AA EXHIBIT A2

~ Mack Road 30'0" 30'0" 2'0" 11'0" 11'0" 2'0" EXISTING SECTION BB ~ Mack Road 30'0" ROW South of CL 30'0" ROW North of CL 2'0" 5'0" 12'0" 12'0" 5'0" 2'0" Bikeway Bikeway $USER$ $DATE$ $TIME$ $FILE$ ENGINEERING RESOURCE ASSOCIATES 3S701 WEST AVENUE, SUITE 150 WARRENVILLE, ILLINOIS 60555 PHONE (630) 3933060 FAX (630) 3932152 DRAWN DESIGNED CHECKED DATE M. LANGE FEBRUARY 2017 ALTERNATE #1 SHARED ROADWAY SECTION BB EXHIBIT B1

2:1(max) (h:v) ~ Mack Road ~ Trail and 30'0" 30'0" 3'0" 10'0" 2'0" 6'0" 2'0" 2'0" 2'0" 11'0" 11'0" Front Face of Wall Shareduse path 4'6" Railing Finished Grade, F.F. 1'6" typ. Existing groundline ALTERNATE #2 PEDESTRIAN BRIDGE SOUTH OF EXISTING ROADWAY SECTION BB ~ Mack Road 30'0" 30'0" 2'0" 11'0" 11'0" 10'6" 10'0" 2'0" Shareduse path ALTERNATE #3 WIDENINKIND EXISTING BRIDGE $USER$ $DATE$ $TIME$ $FILE$ ENGINEERING RESOURCE ASSOCIATES 3S701 WEST AVENUE, SUITE 150 WARRENVILLE, ILLINOIS 60555 PHONE (630) 3933060 FAX (630) 3932152 DRAWN DESIGNED CHECKED DATE M. LANGE FEBRUARY 2017 SECTION BB EXHIBIT B2

~ Mack Road 30'0" Varies 30'0" to 50'0" 1'0" ~ Bridge 36'0" Out to Out of Deck 34'0" Face to Face of Curb 4'0" 12'0" 12'0" 6'0" Shoulder Shoulder Existing HMA Overlay (12) 17" PPC Deck Beams @ 3'0" cts. = 33'0" EXISTING TYPICAL SECTION CC ~ Mack Road and Bridge 30'0" Varies 30'0" to 50'0" 1'0" Steel Railing, Type TP1 (Modified) 36'0" Out to Out of Deck 4'6" Railing 1'0" 5'0" bikeway 12'0" 34'0" Face to Face of Curb 12'0" 5'0" Bikeway Grout & Seal Joints New 4" Concrete Wearing Surface (12) 17" PPC Deck Beams @ 3'0" cts. = 33'0" ALTERNATE #1 SHARED ROADWAY SECTION CC $USER$ $DATE$ $TIME$ $FILE$ ENGINEERING RESOURCE ASSOCIATES 3S701 WEST AVENUE, SUITE 150 WARRENVILLE, ILLINOIS 60555 PHONE (630) 3933060 FAX (630) 3932152 DRAWN DESIGNED CHECKED DATE M. LANGE FEBRUARY 2017 EXHIBIT C1

~ Mack Road Existing 30'0" Varies 30'0" to 50'0" ROW 1'0" ~ Bridge ** 9'6" Subject to refinement during design phase ~ Trail and PGL 14'0" Out to Out Clear SteelFormed Deck with Concrete ** 3'6" Stringer Beams Floor Beam 5'9" 4'0" Shoulder 12'0" 36'0" Out to Out of Deck 34'0" Face to Face of Curb 12'0" Existing HMA Overlay 6'0" Shoulder (12) 17" PPC Deck Beams @ 3'0" cts. = 33'0" Bottom of truss to match Low Beam on the bridge ALTERNATE #2 PEDESTRIAN BRIDGE SOUTH OF EXISTING BRIDGE SECTION CC ** Subject to refinement during design phase 44'9" Out to Out of Bridge ~ Mack Road 27'9" Varies 30'0" to 50'0" 1'0" 30'0" Face to Face of Curb 1'0" 12'4" 4" Curb Bike Path 4'0" 12'0" 12'0" Parapet Railing 2'0" 1'8" Pedestrian Railing Shoulder Existing Bituminous Wearing Surface 2'4" 4'6" (12) 17" PPC Deck Beams @ 3'0" cts. = 33'0" (2) 17" PPC Deck Beams @ 4'0" cts ALTERNATE #3 WIDENINKIND EXISTING BRIDGE $USER$ $DATE$ $TIME$ $FILE$ ENGINEERING RESOURCE ASSOCIATES 3S701 WEST AVENUE, SUITE 150 WARRENVILLE, ILLINOIS 60555 PHONE (630) 3933060 FAX (630) 3932152 DRAWN DESIGNED CHECKED DATE M. LANGE FEBRUARY 2017 SECTION CC EXHIBIT C2

~ Mack Road 30'0" ROW South of CL 50'0" ROW North of CL 2'0" 12'0" 12'0" 2'0" Existing Roadway EXISTING SECTION DD ~ Mack Road 30'0" ROW South of CL 50'0" ROW North of CL 2'0" 5'0" 12'0" 12'0" 5'0" 2'0" Bikeway Bikeway Existing Roadway 3:1 50:1 50:1 3:1 Existing $USER$ $DATE$ $TIME$ $FILE$ ENGINEERING RESOURCE ASSOCIATES 8" Gas 3S701 WEST AVENUE, SUITE 150 WARRENVILLE, ILLINOIS 60555 PHONE (630) 3933060 FAX (630) 3932152 DRAWN DESIGNED CHECKED DATE M. LANGE FEBRUARY 2017 ALTERNATE #1 SHARED ROADWAY SECTION DD EXHIBIT D1

~ Mack Road 30'0" ROW South of CL 50'0" ROW North of CL 2'0" 10'0" 8'0" 2'0" 2'0" 2'0" 11'0" 11'0" 2'0" Bike Path Existing Roadway 3:1 ALTERNATE #2 PEDESTRIAN BRIDGE SOUTH OF ROADWAY Existing 8" Gas SECTION DD ~ Mack Road 30'0" ROW South of CL 50'0" ROW North of CL 11'0" 11'0" 10'6" 10'0" 2'0" Bike Path Existing Roadway $USER$ $DATE$ $TIME$ $FILE$ ENGINEERING RESOURCE ASSOCIATES Existing 8" Gas 3S701 WEST AVENUE, SUITE 150 WARRENVILLE, ILLINOIS 60555 PHONE (630) 3933060 FAX (630) 3932152 DRAWN DESIGNED CHECKED DATE M. LANGE FEBRUARY 2017 ALTERNATE #3 WIDENINKIND EXISTING BRIDGE SECTION DD EXHIBIT D2

www.eraconsultants.com 3s701 West Avenue, Suite 150 phone 630.393.3060 Warrenville, IL 60555 fax 630.393.2152 PROJECT: Mack Road Bike Path BY: KLK LOCATION: Warrenville DATE: 2017.02.15 REVISED: 2017.04.07 ENGINEER'S OPINION OF PROBABLE CONSTRUCTION COST ALTERNATIVE 1 SITE PREPARATION, EARTHWORK, & EROSION CONTROL* QUANTITY UNIT UNIT COST TOTAL COST Earth Excavation/Removal of Unsuitable Soil 1,230 C.Y. $30.00 $36,900.00 Silt Fence Allowance 3,630 L.F. $3.00 $10,890.00 Ditch Grading 3,180 L.F. $8.00 $25,440.00 Tree Protection Fencing 1 L SUM $5,000.00 $5,000.00 Clearing 1 L SUM $ 16,050.00 $16,050.00 Tree Removal 5 EACH $500.00 $2,500.00 Remove & Relocate Fence 370 L.F. $15.00 $5,550.00 Remove & Relocate Mailbox 4 EACH $50.00 $200.00 Remove & Relocate Decorative Pillar 7 EACH $3,600.00 $25,200.00 Remove & Relocate Post 1 EACH $100.00 $100.00 Restoration 1 L SUM $10,000.00 $10,000.00 SUBTOTAL = $137,830.00 PAVEMENT QUANTITY UNIT UNIT COST TOTAL COST Street Widening & Bike Lane Allowance 1,840 S.Y. $50.00 $92,000.00 Porous Granular Embankment 613 C.Y. $30.00 $18,390.00 Paint Pavement Marking Letters and Symbols 1 L SUM $7,500.00 $7,500.00 Detectable Warning Strip 60 S.F. $35.00 $2,100.00 Crosswalk Striping 1 L SUM $1,000.00 $1,000.00 SUBTOTAL = $120,990.00 STORMWATER QUANTITY UNIT UNIT COST TOTAL COST Compensatory Floodplain Storage 768 C.Y. $50.00 $38,400.00 SUBTOTAL = $38,400.00 MISCELLANEOUS QUANTITY UNIT UNIT COST TOTAL COST Traffic/Pedestrian Signal Modification Allowance 1 L SUM $10,000.00 $10,000.00 Trail Signage 1 L SUM $3,000.00 $3,000.00 Bridge Modifications 1 L SUM $142,800.00 $142,800.00 Traffic Control & Protection 1 L SUM $10,000.00 $10,000.00 SUBTOTAL = $165,800.00 CONSTRUCTION QUANTITY UNIT UNIT COST TOTAL COST Mobilization 1 L SUM $30,000.00 $30,000.00 Construction Layout & AsBuilt Survey 1 L SUM $8,500.00 $8,500.00 SUBTOTAL = $38,500.00 TOTAL = $501,520.00 15 % CONTINGENCY = $75,228.00 GRAND TOTAL = $576,748.00

www.eraconsultants.com 3s701 West Avenue, Suite 150 phone 630.393.3060 Warrenville, IL 60555 fax 630.393.2152 PROJECT: Mack Road Bike Path BY: KLK/JFM LOCATION: Warrenville DATE: 2017.02.15 REVISED: 2017.04.07 ENGINEER'S OPINION OF PROBABLE CONSTRUCTION COST ALTERNATIVE 2 SITE PREPARATION, EARTHWORK, & EROSION CONTROL* QUANTITY UNIT UNIT COST TOTAL COST Earth Excavation/Removal of Unsuitable Soil 1,380 C.Y. $30.00 $41,400.00 Silt Fence Allowance 2,120 L.F. $3.00 $6,360.00 Tree Protection Fencing 1 L SUM $5,000.00 $5,000.00 Clearing 1 L SUM $11,850.00 $11,850.00 Tree Removal 8 EACH $500.00 $4,000.00 Remove & Relocate Mailbox 4 EACH $50.00 $200.00 Remove & Relocate Sign 4 EACH $1,000.00 $4,000.00 Remove & Relocate Address Post 1 EACH $100.00 $100.00 Restoration 1 L SUM $13,000.00 $13,000.00 SUBTOTAL = $85,910.00 PAVEMENT QUANTITY UNIT UNIT COST TOTAL COST Asphalt Trail Pavement Allowance 2,470 S.Y. $40.00 $98,800.00 Porous Granular Embankment 860 C.Y. $30.00 $25,800.00 Detectable Warning Strip 40 S.F. $35.00 $1,400.00 Crosswalk Striping 1 L SUM $2,500.00 $2,500.00 SUBTOTAL = $128,500.00 STORMWATER QUANTITY UNIT UNIT COST TOTAL COST Compensatory Floodplain Storage 1,160 C.Y. $50.00 $58,000.00 SUBTOTAL = $58,000.00 MISCELLANEOUS QUANTITY UNIT UNIT COST TOTAL COST Traffic/Pedestrian Signal Modification Allowance 1 L SUM $50,000.00 $50,000.00 Trail Signage 1 L SUM $3,000.00 $3,000.00 Prefabricated Pedestrian Bridge 1 L SUM $569,800.00 $569,800.00 Retaining Walls 1 L SUM $30,000.00 $30,000.00 Dog Park Modification Allowance A 1 L SUM $25,000.00 $25,000.00 Wetland Restoration 1 L SUM $20,000.00 $20,000.00 Traffic Control & Protection 1 L SUM $7,500.00 $7,500.00 SUBTOTAL = $705,300.00 CONSTRUCTION QUANTITY UNIT UNIT COST TOTAL COST Mobilization 1 L SUM $50,000.00 $50,000.00 Construction Layout & AsBuilt Survey 1 L SUM $10,000.00 $10,000.00 SUBTOTAL = $60,000.00 OPTIONAL (Not Included) QUANTITY UNIT UNIT COST TOTAL COST Dog Park Modification Allowance B 1 L SUM $150,000.00 $150,000.00 SUBTOTAL = $150,000.00 TOTAL = $1,037,710.00 15 % CONTINGENCY = $155,656.50 GRAND TOTAL = $1,193,366.50

www.eraconsultants.com 3s701 West Avenue, Suite 150 phone 630.393.3060 Warrenville, IL 60555 fax 630.393.2152 PROJECT: Mack Road Bike Path BY: KLK/JFM LOCATION: Warrenville DATE: 2017.02.15 REVISED: 2017.04.07 ENGINEER'S OPINION OF PROBABLE CONSTRUCTION COST ALTERNATIVE 3 SITE PREPARATION, EARTHWORK, & EROSION CONTROL* QUANTITY UNIT UNIT COST TOTAL COST Earth Excavation/Removal of Unsuitable Soil 1,290 C.Y. $30.00 $38,700.00 Silt Fence Allowance 2,010 L.F. $3.00 $6,030.00 Tree Protection Fencing 1 L SUM $5,000.00 $5,000.00 Clearing 1 L SUM $27,000.00 $27,000.00 Tree Removal 25 EACH $500.00 $12,500.00 Remove & Relocate Fence 370 L.F. $10.00 $3,700.00 Remove & Relocate Decorative Pillar 7 EACH $3,600.00 $25,200.00 Remove & Relocate Sign 1 EACH $2,000.00 $2,000.00 Remove & Relocate Address Post 1 EACH $100.00 $100.00 Restoration 1 L SUM $10,000.00 $10,000.00 SUBTOTAL = $130,230.00 PAVEMENT QUANTITY UNIT UNIT COST TOTAL COST Asphalt Trail Pavement Allowance 2,290 S.Y. $40.00 $91,600.00 Porous Granular Embankment 575 C.Y. $30.00 $17,250.00 Detectable Warning Strip 40 S.F. $35.00 $1,400.00 Depressed Curb 30 L.F. $35.00 $1,050.00 5" PCC Sidewalk 30 S.F. $7.50 $225.00 Crosswalk Striping 1 L SUM $1,500.00 $1,500.00 SUBTOTAL = $113,025.00 STORMWATER QUANTITY UNIT UNIT COST TOTAL COST 18" RCP Class IV 230 L.F. $50.00 $11,500.00 Structures 4 EACH $1,500.00 $6,000.00 Culvert 14 L.F. $50.00 $700.00 Compensatory Floodplain Storage 1,331 C.Y. $50.00 $66,550.00 SUBTOTAL = $84,750.00 MISCELLANEOUS QUANTITY UNIT UNIT COST TOTAL COST Traffic/Pedestrian Signal Modification Allowance 1 L SUM $50,000.00 $50,000.00 Split Rail Fence 1,480 L.F. $10.00 $14,800.00 Trail Signage 1 L SUM $3,000.00 $3,000.00 Bridge Widening 1 L SUM $260,200.00 $260,200.00 Approach Slab Widening 1 L SUM $61,600.00 $61,600.00 Retaining Walls 1 L SUM $30,000.00 $30,000.00 Wetland Restoration 1 L SUM $20,000.00 $20,000.00 Traffic Control & Protection 1 L SUM $7,500.00 $7,500.00 SUBTOTAL = $447,100.00 CONSTRUCTION QUANTITY UNIT UNIT COST TOTAL COST Mobilization 1 L SUM $40,000.00 $40,000.00 Construction Layout & AsBuilt Survey 1 L SUM $8,500.00 $8,500.00 SUBTOTAL = $48,500.00 TOTAL = $823,605.00 15 % CONTINGENCY = $123,540.75 GRAND TOTAL = $947,145.75

From: To: Cc: Subject: Date: Road District Hocking, Kristine Road District RE: Winfield Township Position Letter for Mack Road Bike Path Thursday, March 16, 2017 2:03:08 PM After careful consideration of the preliminary design layout locations for the proposed bike path on Mack Road, the township is in favor of the bike path located entirely on the North side of the pavement edge. This route is preferable for safety, design and maintenance concerns. Please advise our office if another alternative is being considered as the primary solution. We appreciate your willingness to include us in your project in the planning phase. John S. Dusza Highway Commissioner Winfield Township Road District 30W575 Roosevelt Road P.O. Box 617 West Chicago, IL 601860617 6302318850 (p) 6392319508 (f) road@winfieldtownship.com From: Hocking, Kristine [mailto:khocking@warrenville.il.us] Sent: Thursday, March 16, 2017 11:12 AM To: Road District <Road@WinfieldTownship.com> Subject: Winfield Township Position Letter for Mack Road Bike Path John, I was wondering if we could get a position letter regarding which Mack Road Bike Path Alternative that the Township favors. Thanks, Kristine

Kristine Hocking, P.E, CFM Senior Civil Engineer City of Warrenville 6308363066 (phone) 6303931531 (fax) khocking@warrenville.il.us