VISIT OUR WEBSITEwww.michigan.gov/i375study
CONTACT [email protected]
I-375 IMPROVEMENT PROJECT
Purpose & NeedPROJECT PURPOSE
The purpose is to identify a transportation improvement alternative that will:
Address functionally obsolete interchange design, deteriorated bridges and roadway with an appropriate solution which considers safety, operations and long-term life-cycle costs.
Address existing and future transportation needs and roadway safety for all users.
Improve connectivity to surrounding areas for both vehicular and non-motorized users, and enhance connections to existing and planned transit services which may result in improved community health.
Enhance access to enable future development and other place-making opportunities envisioned in official land use and long-term economic development plans.
PROJECT NEED
The proposed project will address the following needs:
Deteriorated bridges crossing I-375, which are over 50 years old, and deteriorated pavement conditions.
Outdated existing geometric conditions, such as ramp widths and sharp curvature at the south end of the corridor, along with insufficient weave/ merge areas, which result in elevated crash rates and increased congestion.
Lack of a direct connection for vehicles and pedestrians to the developing East Riverfront from the I-375 corridor.
Poor connectivity and confusing access to downtown destinations through the I-75/I-375 interchange and Gratiot Avenue connector. Operational congestion and safety issues along the Jefferson Avenue corridor west of I-375 due to high volumes and inefficient left turning movements.
Poor environment in I-375 and Jefferson Avenue corridors for transit and non-motorized travel, including long pedestrian crossing distances, lack of bike facilities, and poor connectivity to existing transit services.
VISIT OUR WEBSITEwww.michigan.gov/i375study
CONTACT [email protected]
I-375 IMPROVEMENT PROJECT
Screening Process2014 PLANNING AND ENVIRONMENTAL LINKAGES STUDY
Refinements made based on public feedback and detailed technical environmental analysis
6 ILLUSTRATIVE ALTERNATIVES
2 PRACTICAL ALTERNATIVES
The 2014 Planning and Environmental Linkages (PEL) Study, the I-375 Alternatives Study, identified a Purpose and Need for the project and developed six Illustrative Alternatives to address those needs.
The study included community outreach and technical analysis of traffic operations and safety, with the intention that these efforts will meet the NEPA requirements.
The six Illustrative Alternatives from the 2014 PEL Study were studied further. A screening process based on the Purpose and Need was completed to narrow down the six Illustrative Alternatives to two Practical Alternatives.
WE ARE HERETwo Practical Alternatives were selected following the Illustrative Alternative screening. These alternatives will be further refined after we receive public feedback.
1 PREFERRED ALTERNATIVE
MDOT will hold a public hearing to present the social, economic, and environmental impacts of the two Practical Alternatives that will ultimately lead to a decision of the Preferred Alternative.
Illustrative Alternatives developed from the 2014 PEL Study
AlternativesScreening by thetechnical team
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CONTACT [email protected]
I-375 IMPROVEMENT PROJECT
Screening Results
Meets the Purpose & Need
1 2 3ILLUSTRATIVE ALTERNATIVES 4 5 6
Best Serves the Needs of Non-Motorized Users
Easiest to Build and Maintain
Enables Economic Development & Placemaking
6Illustrative
Alternatives
ScreeningProcess
2Practical
AlternativesSix Illustrative Alternatives from
the 2014 PEL Study were examinedA screening process scored howeach Illustrative Alternative met
the project’s Purpose & Need
Two Practical Alternatives were developed from the highest scoring
Illustrative Alternatives (4&5)keyboard_arrow_right keyboard_arrow_rightkeyboard_arrow_down
VISIT OUR WEBSITEwww.michigan.gov/i375study
CONTACT [email protected]
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!"#$75
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I-375 NB
/SB
No-BuildBoulevard
© OpenStreetMap (and) contributors, CC-BY-SA
123=
1237
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C A N A D AC A N A D A
Legend
I-375 NB/SB
¯Data is assumed to be similar tothat of Practical Alternative 4
0 0.125 0.25Miles
I-375 IMPROVEMENT PROJECT
Travel TimesMORNING TRAVEL TIMES (MINUTES)
Minutes
No-Build 5.2 Minutes
7.5 Minutes
4.8 Minutes
7.8 Minutes
3.1 Minutes
6.4 Minutes
5.2 Minutes
5.7 Minutes
Boulevard
No-Build
Boulevard
0 2 4 6 8 10
AFTERNOON TRAVEL TIMES (MINUTES)
Minutes
No-Build
Boulevard
No-Build
Boulevard
0 2 4 6 8 10
2 minutes slowerthan No-Build
2 minutes slowerthan No-Build
1 minute fasterthan No-Build
3 minutes slowerthan No-Build
I-375 to/from Chrysler Freeway
INBOUNDCHRYSLER FREEWAY TO I-375
PEAK DIRECTION
OUTBOUNDI-375 TO CHRYSLER FREEWAY
INBOUNDCHRYSLER FREEWAY TO I-375
OUTBOUNDI-375 TO CHRYSLER FREEWAY
PEAK DIRECTION
VISIT OUR WEBSITEwww.michigan.gov/i375study
CONTACT [email protected]
!"#$375
!"#$75
!"#$75
I-375 <> I-75
No-BuildBoulevard
© OpenStreetMap (and) contributors, CC-BY-SA
123=
1237
1239aa
123=
D e t r o i t R i v e r
C A N A D AC A N A D A
Legend
I-375 NB to I-75 WBI-75 EB to I-375 SB
¯Data is assumed to be similar tothat of Practical Alternative 4
0 0.125 0.25Miles
I-375 IMPROVEMENT PROJECT
Travel Times
INBOUNDFISHER FREEWAY to I-375 SB
PEAK DIRECTION
OUTBOUNDI-375 NB to FISHER FREEWAY
Minutes
No-Build 12.3 Minutes
11.1 Minutes
5.5 Minutes
8.3 Minutes
4.1 Minutes
12.1 Minutes
5.8 Minutes
6.3 Minutes
Boulevard
No-Build
Boulevard
0 2 4 6 8 10 12 14 16
2 4 6 8 10 12 14 160
INBOUNDFISHER FREEWAY to I-375 SB
OUTBOUNDI-375 NB to FISHER FREEWAY
PEAK DIRECTION
Minutes
No-Build
Boulevard
No-Build
Boulevard
2 minutes slowerthan No-Build
6 minutes fasterthan No-Build
1 minute fasterthan No-Build
3 minutes slowerthan No-Build
I-375 to/from Fisher FreewayMORNING TRAVEL TIMES (MINUTES)
AFTERNOON TRAVEL TIMES (MINUTES)
VISIT OUR WEBSITEwww.michigan.gov/i375study
CONTACT [email protected]
!"#$375
!"#$75
!"#$75
Gratio
t EB/W
B
© OpenStreetMap (and) contributors, CC-BY-SA
1239
D e t r o i t R i v e r
C A N A D AC A N A D A
Legend
Gratiot EB/WB
¯Data is assumed to be similar tothat of Practical Alternative 4
0 0.125 0.25Miles
I-375 IMPROVEMENT PROJECT
Travel Times
Minutes
No-Build 3.2 Minutes
5.5 Minutes
2.5 Minutes
2.4 Minutes
2.4 Minutes
3.0 Minutes
2.4 Minutes
3.0 Minutes
Boulevard
No-Build
Boulevard
0 2 4 61 3 5
1 3 5Minutes
No-Build
Boulevard
No-Build
Boulevard
0 2 4 6
2 minutes slowerthan No-Build
Similartravel times
Similartravel times
Similartravel times
Inbound/Outbound Gratiot
INBOUNDGRATIOT
PEAK DIRECTION
OUTBOUNDGRATIOT
INBOUNDGRATIOT
OUTBOUNDGRATIOT
PEAK DIRECTION
MORNING TRAVEL TIMES (MINUTES)
AFTERNOON TRAVEL TIMES (MINUTES)
VISIT OUR WEBSITEwww.michigan.gov/i375study
CONTACT [email protected]
!"#$375
!"#$75
!"#$75
To/From G
reektown
Parking Garage
No-BuildBoulevard
© OpenStreetMap (and) contributors, CC-BY-SA
123= 1239aa
D e t r o i t R i v e r
C A N A D AC A N A D A
Legend
To/From GreektownParking Garage
¯Data is assumed to be similar tothat of Practical Alternative 4
0 0.125 0.25Miles
I-375 IMPROVEMENT PROJECT
Travel Times
Minutes
0.9 Minutes
1.9 Minutes
1.0 Minutes
1.8 Minutes
1.0 Minute
0.5 Minutes
2.1 Minutes
1.5 Minutes
Boulevard
Boulevard
0 1 2 3 4
Minutes
Boulevard
No-Build
No-Build
No-Build
No-Build
Boulevard
0 1 2 3 4
1 minute slowerthan No-Build
1 minute slowerthan No-Build
1 minute slowerthan No-Build
1 minute slowerthan No-Build
Greektown to/from I-375
INBOUNDI-375 SB TO GREEKTOWN
PEAK DIRECTION
OUTBOUNDGREEKTOWN TO I-375 NB
INBOUNDI-375 SB TO GREEKTOWN
OUTBOUNDGREEKTOWN TO I-375 NB
PEAK DIRECTION
MORNING TRAVEL TIMES (MINUTES)
AFTERNOON TRAVEL TIMES (MINUTES)