Post on 02-Apr-2022
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DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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Iowa DOT \ HR Green, Inc. JOHNSON IM-80-6(253)242--13-52 J.089/17/2021
PHASE 1 STAGE 1 NOTES LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
require intermittent full or partial lane closures on 1st Ave.
Remove curb and construct temp. pavement, which may
lane north of Ramp C.
Maintain pedestrian access during construction of temp. turn
Proposed alignments shown in blue for reference only.
Interchange functions as existing diamond interchange.
4
3
2
1
SHT_40120012_J01_temp.dgn J.08 9/17/2021 9:10:54 AMPRELIMINARY SUBJECT TO CHANGE
PHASE 2 STAGE 1 (PROPOSED WINTER STAGE) NOTES
5
4
3
2
1
bridge construction to continue over the winter months.
near bridge abutments should be complete to allow for
abutments, piling for bridge abutments, and retaining walls
Before November 15th, essential grading near bridge
D and all of Ramp C detour.
for ramps and pedestrian trail. Pave parts of Ramps B, C, and
lanes along I-80 west of the interchange. Grade east infields
temporary pavement, trail, and bridges. Construct parallel
pedestrian box culverts, retaining walls, permanent pavement,
Remove east bridge and construct on east side of 1st Ave:
All existing ramps function as existing diamond interchange.
in each direction, in addition to SB to EB left turn lane.
1st Ave: traffic shifted to west side. One lane of traffic open
lane, otherwise routed on existing path.
Pedestrian traffic routed along outside of SB to WB turn
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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PHASE 2 STAGE 2 NOTES
OFF-SITE DETOUR ROUTES
80
SB 1ST AVE TO EB I-80
NB 1ST AVE TO WB I-80
WB I-80 TO SB 1ST AVE
portion of pedestrian box culvert.
Construct north side of IRL Place, including MSE wall and north
ramp A. Construct remaining portion of ramp D and ramp D gore.
adjacent temp. pavement, including south portion of tie to existing
Construct northeast portion of ramp A connection to 1st Ave and
Ramp C to Coral Ridge Ave to I-80 eastbound.
ramp connection, and new ramp. 1st Ave SB traffic is detoured via
Ramp D: 1st Ave NB traffic uses new IRL Place pavement, temp.
used to allow for the use of the parallel acceleration lane.
Ave SB. SB traffic uses temp right turn lane. Ramp detour pavement is
Ramp C: 1st Ave NB traffic detoured to Holiday Rd roundabout to 1st
Ramps B: Traffic unchanged from Phase 2 Stage 1.
detoured to Coral Ridge Ave to I-80 eastbound to Ramp B.
existing median, and existing 1st Ave pavement. 1st Ave SB traffic is
Ramp A: 1st Ave NB traffic uses existing ramp, temp pavement in
is unchanged from Phase 2 Stage 1.
1st Ave: other than removal of SB to EB left turn lane, through traffic
Pedestrian traffic unchanged from Phase 2 Stage 1.
7
6
5
4
3
2
1
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
1ST A
VE
HOLIDAY RD
9TH ST
US 6 / 2ND ST
965
AV
E / HIG
HW
AY
CO
RA
L RID
GE IO
WA RIV
ER
DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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PHASE 2 STAGE 3 NOTES
OFF-SITE DETOUR ROUTES
80
6
5
4
3
2
1
WB I-80 TO SB 1ST AVE
NB 1ST AVE TO WB I-80
SB 1ST AVE TO EB I-80
either side, including temp pedestrian trail pavement.
Construct remaining north crossover pavement and temp. pavement on
and the Coral Ridge Ave interchange.
ramp. 1st Ave SB traffic is detoured to eastbound I-80 via Ramp C
Ramp D: 1st Ave NB traffic uses new 1st Ave pavement and new
Ramps B and C: Traffic unchanged from Phase 2 Stage 2.
traffic detoured NB to Holiday Rd roundabout to 1st Ave SB.
1st Ave pavement, temp pavement, and existing pavement. 1st Ave SB
Ramp A: 1st Ave NB traffic uses existing ramp, temp connection, new
1st Ave: through traffic unchanged from Phase 2 Stage 2.
interchange, crossing 1st Avenue at the hotel driveway intersection.
temp. pavement on the east side of 1st Avenue north of the
the stage when it is switched to the proposed trail, new bridge, and
Pedestrian traffic unchanged from Phase 2 Stage 2, until the end of
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
1ST A
VE
HOLIDAY RD
9TH ST
US 6 / 2ND ST
965
AV
E / HIG
HW
AY
CO
RA
L RID
GE IO
WA RIV
ER
DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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PHASE 2 STAGE 4 NOTES
OFF-SITE DETOUR ROUTES
80
SB 1ST AVE TO EB I-80
NB 1ST AVE TO WB I-80
6
5
4
3
2
1
pavement.
Construct east side of south crossover and adjacent temp
C and the Coral Ridge Ave interchange.
3. 1st Ave SB traffic is detoured to eastbound I-80 via Ramp
Ramp D: 1st Ave NB traffic unchanged from Phase 2 Stage
Ramps B and C: Unchanged from Phase 2 Stage 3.
pavement.
existing ramp, temp. connection, and existing 1st Ave
connection, and new 1st Ave pavement. 1st Ave SB traffic uses
Ramp A: 1st Ave NB traffic uses existing ramp, temp.
construction.
except for bump-out around south crossover pavement
1st Ave: through traffic unchanged from Phase 2 Stage 1,
Stage 3.
Pedestrian traffic uses temp. route described in Phase 2
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
1ST A
VE
HOLIDAY RD
9TH ST
US 6 / 2ND ST
965
AV
E / HIG
HW
AY
CO
RA
L RID
GE IO
WA RIV
ER
DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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Iowa DOT \ HR Green, Inc. JOHNSON IM-80-6(253)242--13-52 J.299/17/2021
OFF-SITE DETOUR ROUTE
80
EB I-80 TO NB 1ST AVE
PHASE 3 STAGE 1 NOTES
9
8
7
6
5
4
3
2
1
connection before November 15th.
Pave remaining portion of Ramp B (except gore), including temp. ramp
over winter during the next stage.
before November 15th to allow for the construction of the new west bridge
drive piling, and build retaining walls near the new west bridge abutments
Demolish existing west bridge and pedestrian bridge. Complete essential grading,
IRL Place: Right in / right out movements allowed.
Ramp D: traffic uses new 1st Ave pavement and new ramp.
Ramp C: traffic unchanged from Phase 2 Stage 4.
ramp and existing 1st Ave pavement.
ramp A. Locals may use 9th St and IRL Place. 1st Ave SB traffic uses existing
Ramp B: 1st Ave NB traffic detoured to Dubuque St interchange to I-80 WB to
Ramp A: traffic uses existing ramp, temp. connection, and new 1st Ave pavement.
pavement on east side with left turn lanes onto on-ramps.
1st Ave: through traffic shifted to new bridge, new pavement and temp.
Pedestrian traffic follows temporary path described in Phase 3 Stage 2.
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
1ST A
VE
HOLIDAY RD
9TH ST
DUBUQ
UE ST
IOW
A RIV
ER
SHT_40120012_J01_temp.dgn J.29 9/17/2021 9:11:38 AMPRELIMINARY SUBJECT TO CHANGE
PHASE 3 STAGE 2 (PROPOSED WINTER STAGE) NOTES
7
6
5
4
3
2
1
most of Ramp A. Construct permanent median barrier along I-80.
culvert and crossover pavement, and remainder of Ramp C. Construct
Magellan entrance, most of Ramp B gore, remainder of north box
Ramp B. Construct most of the remaining west side, including
Complete construction of proposed west bridge. Remove existing
IRL Place: traffic unchanged from Phase 3 Stage 1.
Ramps C and D: traffic unchanged from Phase 3 Stage 1
connection to new 1st Ave pavement.
Ramp B: traffic uses temp. connection, new ramp, and temp.
Ramp A: traffic unchanged from Phase 3 Stage 1.
1st Ave: through traffic unchanged from Phase 3 Stage 1.
Pedestrian traffic unchanged from Phase 3 Stage 1.
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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X
X
X
X
X
X
X
X
PHASE 3 STAGE 3 NOTES
9
8
7
6
5
4
3
2
1
C shoulder. Construct I-80 shoulder at existing Ramp B and Ramp C gores.
temp. detour connection. Construct Ramp B gore, Ramp B shoulder, and Ramp
north crossover, adjacent retaining wall, and new trail. Construct Ramp A
Finish Magellan entrance connection. Construct SB 1st Ave pavement north of
must exit from the existing driveway.
Magellan: traffic must enter from SB 1st Avenue into the new entrance. Traffic
IRL Place: traffic unchanged from Phase 3 Stage 2.
Ramp D: traffic unchanged from Phase 3 Stage 2.
Ramp C: traffic uses temp connection to new ramp.
pavement. SB traffic unchanged from Phase 3 Stage 2.
Ramp B: NB traffic uses new ramp and temp connection to 1st Ave
Ramp A: traffic unchanged from Phase 3 Stage 2.
1st Ave: through traffic unchanged from Phase 3 Stage 2.
Pedestrian traffic unchanged from Phase 3 Stage 2.
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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PHASE 4 STAGE 1 NOTES
proposed Ramp A gore.
Remove existing Ramp A pavement. Grade and pave
interchange.
All movements opened at the intersections north of the
entrance intersection with fully operational traffic signals.
All movements opened at the IRL Place and Magellan
to proposed ramp pavement.
Ramp A: traffic uses temporary detour connection from I-80
permanent pavement.
All 1st Ave traffic changed to operate as a full DDI on
5
4
3
2
1
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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PHASE 4 STAGE 2 NOTES
3
2
1
be required on 1st Ave and ramp terminals.
markings, etc. Intermittent full and partial lane closures may
Finish any remaining removals, grading, seeding, pavement
and gutter and landscaping in islands.
Remove temp pavement in DDI islands and construct curb
All traffic operates in the final layout.
LEGEND
RAMP D
RAMP ARAMP C
RAMP B
I-80 WB
I-80 EB I-80 WB
I-80 EB
1S
T
AV
E
1S
T
AV
E
9TH ST
LANDING P
LACEIOWA R
IVER
DRI
VE
WA
Y
MA
GE
LL
AN
Pedestrian Box Culvert, MSE Wall, or Bridge
Permanent Pavement
Temporary Pavement
CONSTRUCTION IN PREVIOUS STAGES:
Bridge
Pedestrian Box Culvert
Permanent Pavement
Temporary Pavement
Pavement Removal
CONSTRUCTION IN CURRENT STAGE:
Staging Area
Unpinned Temporary Barrier Rail
Pinned Temporary Barrier Rail
Channelizer
Temporary Pedestrian / Bike Path
Construction Ingress / Egress
Direction of Traffic
Temporary Shoring in Place
Existing Pavement
DESIGN TEAM PROJECT NUMBER SHEET NUMBER COUNTYENGLISHFILE NO.
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