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Washington Street: The Washington Street underpass alternative connects Curtiss St. with
Washington St. north of the BNSF tracks via a relatively straight alignment (see Exhibits 10 and
11). In order to minimize impacts to adjacent properties on Warren Av, a separate roadway
bridge is proposed on Warren Av. crossing over Washington St. This would maintain east/west
connectivity on Warren Av. and would not require the full acquisition of the commercial
businesses on the northeast and northwest corners of Washington St./Warren Av. (Automotive
Service, law office, tax business, HVAC office).
The roadway profile for this alignment (see Exhibit 12) achieves a maximum grade of seven
percent (7%). This grade does not meet ADA standards. A separate profile would have to
developed for the sidewalk (see profile and typical section) to meet ADA requirements without
frequent flat landings and handrail on both sides. A 7% grade is acceptable to vehicles, but may
be considered strenuous by bicyclists in the uphill direction. As indicated in the typical section,
the bike lanes would be raised to follow the sidewalk profile as well.
The major impacts (acquisitions) of the Washington St. 7% alternative are north of the BNSF
tracks between Warren Av. and Rogers St. where grade changes will eliminate access changes
impact additional properties.
To reduce the 7% profile grade, a sub‐alternative to Washington St. has been developed (see
Exhibits 13 and 14). To encourage circulation in the downtown, this sub‐alternative would
curve Curtiss St. from the west into Washington St. Curtiss St. to the east would curve and
“tee” into the new roadway. This alternative could be constructed with a 5% maximum vertical
grade (thereby meeting ADA without being considered a “ramp”). This alternative would
impact additional properties beyond the 7% alternative, including apartment buildings in
northeast quadrant of the (existing) Curtiss St./Washington St. intersection.
An additional concern of the Washington St. alternatives is increased traffic through the
residential neighborhoods north of Roger St. The proposed concept includes a physical turn
prohibition (permit only right turns in/right turns out) north of the Washington St./Rogers St.
intersection.
5’1.5’ 1.5’
68’
8’ 11’11’ 11’11’4’ 8’1.5’ 1.5’
75’
Typical Sections
Washington Street
10’15’ 15’5’ 15’ & Varies
4’4’
1.5’ 1.5’
75’
Median
5’11’11’11’5’
Washington Street at BNSF Railroad crossing
Existing Typical Section
(Looking North)
Proposed Typical Section: Interim Condition
Proposed Typical Section: Ultimate Condition
6’ 6’
4.8’
4.8’
Max.
Max.
1’ 1’ 7.5’7.5’
Shoulder
Shoulder
Media
n
Feasibility Study
Grade SeparationDowners Grove
Village of
Exhibit 10
Metra Station
Downers Grove
50’ 100’0scale in feet
Warren A
v.
Warren A
v.
Rogers St. Bryan Pl.
Washington St.
Curtis
s St.
Washington St.
Burlin
gto
n A
v.
BN
SF R
R
ApartmentsApartments
Apartments
Apartments
Polic
e D
epartm
ent
Post Office
Apartments
Masonic Lodge
Apartments
Apart
ments
Apartments Whiffen Pl.
Belden Av.
Service
Auto
Offices
Apartments
Resid
ence
Pro
ductions
Media
Classic
Resid
ence
Resid
ence
Resid
ence
Metra Station Platform Extension
Office
Resid
ential
Reconfigure
Full Parcel Acquisition
Entrance Removed
Proposed Bridge
Retaining Wall
Exist. Right-of-Way
Prop. Perm Easement
Prop. Right-of-Way
Legend
Overview & Impacts
7% Max. Profile Grade with Warren Avenue Bridge
Washington Street Grade Separation Alternative
Job No. 10439312-565-0450
Chicago, Illinois 60601
205 North Michigan Avenue, Suite 2400
Alfred Benesch & Company
Downers Grove
Village of Grade Separation Feasibility Study
ONLY
ONLY
ONLY
Exhibit 11
300+00 301+00 302+00 303+00 304+00 305+00 306+00 307+00 308+00 309+00 310+00
721.4
0
724.2
0
724.4
3
725.8
4
726.0
0
726.0
0
726.1
2
727.0
8
724.9
7
723.2
0
722.2
0
720.1
0
716.9
0
714.0
5
712.2
3
712.0
0
711.8
3
711.0
6
711.5
2
711.9
2
712.5
7
695
700
705
710
715
720
725
695
700
705
710
715
720
725
Curtiss St.
BN
SF R
R
Burlin
gto
n A
v.
L
Proposed Ground Profile
L
50’ 100’0scale in feet
Section A-A
14’-9"
Cle
ara
nce
0
5’
scale in feet
Vertical
Depth
Structure
6’-9"
BASED ON PROVIDED GIS DATA
NOTE: EXISTING ELEVATIONS ESTIMATED
C Washington St.
Washington St.
Washington St.
Rogers St.
Bryan Pl.
Warren A
v.
Washington Av.
along Proposed C
Existing Ground Profile 62’
Proposed Sidewalk Profile
Reconfigure
Full Parcel Acquisition
Entrance Removed
Edge of Pavement
Proposed Bridge
Retaining Wall
Parcel Boundary
Exist. Right-of-Way
Prop. Perm Easement
Prop. Right-of-Way
Legend
Apartments Apartments
Post Office
Apartments
Apartments
Police Department
Apartments
Apartments
Apart
ments
Resid
ence
Office
Resid
ence
Service
Auto
Resid
ence
Pro
ductions
Media
Classic
Resid
ence
Apartments
Platforms to EastExtend Metra Station
Depth
Structure
3’-6"
Proposed Warren Av. Bridge
44.5’
Section B-B
5’11’11’5’ 8’1.5’ 1.5’1.5’
Shoulder
Shoulder
3.5’
44.5’
Plan and Profile
7% Max. Profile Grade with Warren Avenue Bridge
Washington Street Grade Separation Alternative
Job No. 10439312-565-0450
Chicago, Illinois 60601
205 North Michigan Avenue, Suite 2400
Alfred Benesch & Company
Downers Grove
Village of Grade Separation Feasibility Study
300+00
305+00 310+00
ONLY
ONLY
ONLY
722.0
0
VPI
ST
A.
301+06.7
5
EL
EV
ATIO
N 719.8
6
-2.00%
-7.00
%
130.00’ V.C.
K = 26
450.00’ V.C.
K = 38
VPI
ST
A.
308
+50.0
0
EL
EV
ATIO
N 711.0
4
+5.0
0%
+1.00%
100.00’ V.C.
K = 25
712.5
4
+41.7
5
EL.
721.1
6
+71.7
5
EL.
715.3
2
+65.0
0
EL.
708.7
9
+15.0
0
EL.
704.2
9
+00.0
0
EL.
708.5
4
+00.0
0
EL.
711.5
4
722.0
0
-5.00%
VPI
ST
A.
305
+66.6
5
EL
EV
ATIO
N 696.8
7
-5.00% +5.0
0%
VPI
ST
A.
308
+50.0
0
EL
EV
ATIO
N 711.0
4
+5.0
0%
+1.00%
100.00’ V.C.
712.5
4
+00.0
0
EL.
708.5
4
+00.0
0
EL.
711.5
4
722.0
0
720.9
9
719.3
5
716.7
5
713.3
4
709.8
4
706.5
0
703.8
0
701.7
7
700.4
0
699.7
0
699.6
7
700.3
0
701.6
0
703.5
7
706.0
4
708.5
4
710.5
4
711.5
4
712.0
4
712.5
4
1.5’ 1.5’
75’
Median
5’11’11’11’5’
Proposed Typical Section: Interim Condition
6’ 6’
4.8’
Max.
1’ 1’ 7.5’7.5’
Shoulder
Shoulder
A
AB B
Warren A
v.
Exhibit 12
Metra Station
Downers Grove
50’ 100’0scale in feet
Warren A
v.
Warren A
v.
Rogers St. Bryan Pl.
Washington St.
Curtis
s St.
Washington St.
Burlin
gto
n A
v.
BN
SF R
R
ApartmentsApartments
Apartments
Apartments
Polic
e D
epartm
ent
Post Office
Apartments
Masonic Lodge
Apartments
Apart
ments
Apartments Whiffen Pl.
Belden Av.
Service
Auto
Offices
Apartments
Resid
ence
Pro
ductions
Media
Classic
Resid
ence
Resid
ence
Resid
ence
Metra Station Platform ExtensionOffice
Resid
ential
Curtiss St. Tie-In
Overview & Impacts
5% Max. Profile Grade
Washington Street Grade Separation Alternative
Reconfigure
Full Parcel Acquisition
Entrance Removed
Proposed Bridge
Retaining Wall
Exist. Right-of-Way
Prop. Perm Easement
Prop. Right-of-Way
Legend
Job No. 10439312-565-0450
Chicago, Illinois 60601
205 North Michigan Avenue, Suite 2400
Alfred Benesch & Company
Downers Grove
Village of Grade Separation Feasibility Study
ONLY
ONLY
ONLY
Exhibit 13
Curtis
s St.
BN
SF R
R
Warren A
v.
R 47’
R 47’
L
Proposed Ground Profile
L
50’ 100’0scale in feet
Section A-A
14’-9"
Cle
ara
nce
0
5’
scale in feet
Vertical
Depth
Structure
6’-9"
BASED ON PROVIDED GIS DATA
NOTE: EXISTING ELEVATIONS ESTIMATED
C Washington St.
Washington St.
Washington St. Rogers St.
Warren A
v.
Washington Av.
along Proposed C
Existing Ground Profile
62’
Curtiss St. Tie-in
1.5’
75’
Median
4’11’11’11’4’ 7.5’
Buffer
Bike Lane
Striped
1.5’ 7.5’
Buffer
Bike Lane
Striped
8’8’
Reconfigure
Full Parcel Acquisition
Entrance Removed
Edge of Pavement
Proposed Bridge
Retaining Wall
Parcel Boundary
Exist. Right-of-Way
Prop. Perm Easement
Prop. Right-of-Way
Legend
Plan and Profile
5% Max. Profile Grade
Washington Street Grade Separation Alternative
Job No. 10439312-565-0450
Chicago, Illinois 60601
205 North Michigan Avenue, Suite 2400
Alfred Benesch & Company
Downers Grove
Village of Grade Separation Feasibility Study
115+00
10
5+00
110+00
ONLY
ONLY
ONLY
718.9
6
VPI
ST
A.
104
+25.0
0
EL
EV
ATIO
N 720.2
1
+1.00%-5.00%
150.00’ V.C.
K = 25
VPI
ST
A.
109
+50.0
0
EL
EV
ATIO
N 693.9
6
-5.00% +4.55%
500.00’ V.C.
K = 52
VPI
ST
A.
113
+25.0
0
EL
EV
ATIO
N 711.0
3
+4.55%
+1.00%
100.00’ V.C.
K = 28
712.5
6
718.9
6
VPI
ST
A.
104
+25.0
0
EL
EV
ATIO
N 720.2
1
+1.00%-5.00%
150.00’ V.C.
K = 25
VPI
ST
A.
109
+50.0
0
EL
EV
ATIO
N 693.9
6
-5.00% +4.55%
500.00’ V.C.
K = 52
VPI
ST
A.
113
+25.0
0
EL
EV
ATIO
N 711.0
3
+4.55%
+1.00%
100.00’ V.C.
K = 28
712.5
6
718.9
6
VPI
ST
A.
104
+25.0
0
EL
EV
ATIO
N 720.2
1
+1.00%-5.00%
150.00’ V.C.
K = 25
VPI
ST
A.
109
+50.0
0
EL
EV
ATIO
N 693.9
6
-5.00% +4.55%
500.00’ V.C.
K = 52
VPI
ST
A.
113
+25.0
0
EL
EV
ATIO
N 711.0
3
+4.55%
+1.00%
100.00’ V.C.
K = 28
712.5
6
+50.0
0
EL.
719.4
6
+00.0
0
EL.
716.4
6
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0
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6
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4
+75.0
0
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5
+75.0
0
EL.
711.5
3
718.9
6
VPI
ST
A.
104
+25.0
0
EL
EV
ATIO
N 720.2
1
+1.00%-5.00%
150.00’ V.C.
K = 25
VPI
ST
A.
109
+50.0
0
EL
EV
ATIO
N 693.9
6
-5.00% +4.55%
500.00’ V.C.
K = 52
VPI
ST
A.
113
+25.0
0
EL
EV
ATIO
N 711.0
3
+4.55%
+1.00%
100.00’ V.C.
K = 28
712.5
6
+50.0
0
EL.
719.4
6
+00.0
0
EL.
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6
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0
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4
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5
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3
718.9
6
VPI
ST
A.
104
+25.0
0
EL
EV
ATIO
N 720.2
1
+1.00%-5.00%
150.00’ V.C.
K = 25
VPI
ST
A.
109
+50.0
0
EL
EV
ATIO
N 693.9
6
-5.00% +4.55%
500.00’ V.C.
K = 52
VPI
ST
A.
113
+25.0
0
EL
EV
ATIO
N 711.0
3
+4.55%
+1.00%
100.00’ V.C.
K = 28
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6
+50.0
0
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6
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0
EL.
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6
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6
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4
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ST
A.
104
+25.0
0
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EV
ATIO
N 720.2
1
+1.00%-5.00%
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VPI
ST
A.
109
+50.0
0
EL
EV
ATIO
N 693.9
6
-5.00% +4.55%
500.00’ V.C.
K = 52
VPI
ST
A.
113
+25.0
0
EL
EV
ATIO
N 711.0
3
+4.55%
+1.00%
100.00’ V.C.
K = 28
712.5
6
+50.0
0
EL.
719.4
6
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0
EL.
716.4
6
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5
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3
EX.
EL.
724.9
5
PR.
EL.
714.1
7
ST
A.
105
+45.7
6
PR. CURTISS T
690
695
700
705
710
715
720
725
690
695
700
705
710
715
720
690
695
700
705
710
715
720
725
690
695
700
705
710
715
720
725
690
695
700
705
710
715
720
690
695
700
705
710
715
720
725
103+00 104+00 105+00 106+00 107+00 108+00 109+00 110+00 111+00 112+00 113+00 114+00 115+00 116+00 117+00103+00 104+00 105+00 106+00 107+00 108+00 109+00 110+00 111+00 112+00 113+00 114+00
718.9
6
719.4
6
719.4
6
718.4
6
716.4
6
713.9
6
711.4
6
708.9
6
706.4
6
704.2
0
702.4
2
701.1
1
700.2
8
699.9
3
700.0
6
700.6
6
701.7
4
703.3
0
705.3
4
707.6
2
709.7
8
711.1
7
711.7
8
712.2
8
103+00 104+00 105+00 106+00 107+00 108+00 109+00 110+00 111+00 112+00 113+00 114+00 115+00 116+00 117+00
718.2
7
718.9
6
719.5
9
720.8
7
722.0
8
724.1
8
725.0
3
725.4
9
726.0
0
726.0
0
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0
726.7
4
727.1
6
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1
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6
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4
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4
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6
712.0
0
712.0
0
711.2
9
711.4
6
711.6
0
712.2
7
712.6
3
712.7
8
712.2
2
712.0
0
712.0
0
A
A
Exhibit 14
