Our goal is to keep Michigan's motorists safe, informed, and mobile. That is why MDOT offers many ways to help ease the stress of commuting by providing information that commuters want and need as they make daily travel decisions.
Did you know that millions of people visit the Great Lakes State every year? Whether you are from out of state or right here in Michigan, we want to ensure your travel throughout Michigan is informative, comfortable, and fun.
At MDOT, safety is paramount. It is our goal to improve overall safety for all road users, internal staff, contractors performing work on roads, and emergency responders.
Every year, MDOT produces an updated version of the state transportation map. The department also produces numerous geographic information system maps to assist commuters, tourists, and businesses.
In Michigan, there are three publicly-owned and operated bridges: Mackinac Bridge, Blue Water Bridge, and International Bridge. There are also two privately-owned and operated border crossings: Ambassador Bridge and Detroit-Windsor Tunnel.
The Bureau of Bridges and Structures is responsible for statewide policy, procedure development, and execution to ensure all bridges and structures are designed, constructed, maintained, and operated to ensure safety.
MDOT provides funding for competitive grant and loan programs primarily, but not exclusively, for state and local road agencies for the greatest impact on economic development and job creation.
MDOT's Highway Programs focus on the development and management of the department's roadsides, environmental efforts and policies, and federal-aid highway information.
The Bureau of Transportation Planning develops and implements a comprehensive transportation planning process which results in investments that are consistent with the policies of the State Transportation Commission.
Research Administration supports and promotes innovative research that encourages safe, sustainable and cost-effective transportation solutions throughout Michigan.
MDOT provides technologies and partnerships in order to make the transportation system safer and less congested.
MDOT has ongoing government-to-government communication with 12 federally recognized sovereign tribal governments whose lands are situated within Michigan.
MDOT is committed to ensuring that projects, programs and services are performed without discrimination, under Title VI.
The Office of Communications works with the media to inform the public of MDOT's mission, policies and practices in a positive, consistent and credible manner. The office is responsible for media relations, social media, and website development.
Public participation is integral to efficient, effective and responsive transportation decisions. At MDOT, we want to ensure your voice is not only heard, but makes a difference in moving Michigan forward.
Transportation Reality Check takes on transportation myths and misconceptions, and explains why MDOT does things the way they do.
Resources for the development of quality transportation project documents and services.
Resources for specialized engineering and technical support for construction staff.
Resources for prequalification, bid letting, contract awards, and payments.
Resources for consultant advisories, prequalification information, contracts, and proposals.
Resources for grant and economic development opportunities and project coordination.
Resources for local governmental agencies that regularly require access to state right of way.
Resources for MDOT real estate standards, policies and procedures, and training.
Resources for general work zone mobility guidelines for engineering and technical staff.
Resources for rules, guidelines, restrictions, and permits to safely transport goods.
The Internship Program offers undergraduate and graduate students interested in civil engineering and construction management careers, valuable experience by working with professional field staff.
TRAC engages high school and middle school students in solving real-world problems, such as designing bridges or analyzing the environmental effects of building a highway.
YDMP provides participants with opportunities to pursue higher education, personal growth, and exposure to transportation careers.
MDOT's Engineer Development Program (EDP) is a rotational program that provides new engineers experience in multiple work areas while being assigned a senior-level mentor.
The HBCU TDRP is a unique partnership between MDOT and Michigan colleges and universities to offer on-the-job training to undergraduate students pursuing degrees in engineering or transportation-related careers.
The Veteran Internship Program assists honorably discharged veterans of the United States Armed Forces as they transition into the civilian workforce.
Engineering Week videos and lesson plans are all-inclusive resources to show early elementary to high school students the career of civil engineering at MDOT.
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MDOT's seven region offices each handle transportation-related construction, maintenance and programs within the region's geographic boundaries.
MDOT's Office of Governmental Affairs represents the department's interests as new or amendatory legislation is developed or moving through the legislative process.
MDOT's commissions, councils, task forces, and partnerships are responsible for establishing policies, supervising programs, overseeing state and federal funds, providing recommendations and advisement, and acting as a resource.
Transportation System Performance allows MDOT's regions and engineers to expand their knowledge on how Michigan freeways are operating over time and how they compare to each other.
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MDOT is undertaking an Environmental Assessment (EA) study on US-23 in Washtenaw County between M-14 and I-94. These questions are a combination of questions raised at the group and public meetings, public survey responses, and other outreach to MDOT.
Learn more about the US-23 Improvement Project Study, Ann Arbor.
The project limits are US-23 from the I-94/US-23 interchange area north to east M-14/US-23 interchange area in the city of Ann Arbor, Pittsfield Township, and Ann Arbor Township in Washtenaw County.
The environmental assessment of the project is scheduled to be completed in September 2024. The design is scheduled to be completed in 2026, with construction in 2027-2029.
Coordination is ongoing to address Federal Highway Administration (FHWA) guidance, which is new and developing, as well as required on the project. Coordination is also ongoing with the Southeast Michigan Council of Governments (SEMCOG), the Washtenaw Area Transportation Study (WATS), and the City of Ann Arbor, and regional and local goals will be reviewed as part of the project.
The draft purpose and need of the US-23 corridor project between M-14 and I-94 is to improve safety and mobility, address existing and projected traffic congestion, improve operations for all users, and upgrade the aged infrastructure, while minimizing impacts to the natural environment and adjoining properties, and enhancing and preserving positive benefits to the community, businesses and roadway users.
An EA is a concise public document that serves to provide sufficient evidence and analysis regarding the significance of environmental impacts of the proposed action.
September 2024.
A traffic noise study along the entire project corridor is being completed as part of the environmental clearance process. If traffic noise impacts are identified and determined to meet federal thresholds for a residential impact, noise abatement will be reviewed. Noise abatement can take several forms, but noise barriers (walls) tend to be the most practical and cost effective.
The FHWA will only fund noise walls that meet certain criteria:
Studies have shown that noise barriers are ineffective at providing mitigation for locations 500 feet or further from the source.
Based on the findings and recommendations from previous studies completed along this corridor, there is one no-build alternative and three additional alternatives being studied:
A safety study analyzing the most recent five years of available crash data within the study area, including the interchanges, is being conducted. Mitigation measures will be recommended and implemented with the project to address historical crash trends. In addition, predictive analyses methodologies will be employed to assess the effectiveness of each proposed alternative in addressing those historical crash trends.
In response to previous median crossover crashes along this corridor, MDOT is currently completing a project to install high-tension cable median barrier along US-23 from south of I-94 to Geddes Road. Going forward, each of the proposed alternatives will evaluate the safety needs as part of the study to prevent crossover crashes by recommending concrete barrier, guardrail or cable barrier where there is a history of crossover crashes.
MDOT is coordinating with local agencies to develop a common understanding of the needs and priorities for nonmotorized access and connectivity crossing US-23. While not all the bridges are currently planned for replacement or major repairs, MDOT is seeking to leverage project funding to the greatest extent possible to attain nonmotorized goals wherever feasible.
An operational and safety analysis will be performed at these closely spaced intersections. This analysis is also being coordinated with the ongoing Washtenaw Planning and Environmental Linkages (PEL) study, which includes coordinating with the City of Ypsilanti, Ypsilanti Township, and Pittsfield Township, plus collaboration with The Ride for a long-term vision of this area. There are a few alternatives being investigated as part of both studies. Coordinated efforts will continue throughout project development.
Demand is a function of population, land use, and socioeconomic activity, while the capacity of the roadway network is linked to people choosing certain routes. As people tend to choose the most efficient route to reach their preferred destination (i.e., the fastest path), widening US-23 may become attractive for some motorists who are currently using local streets in lieu of US-23. The SEMCOG regional transportation model is being used to estimate this induced demand and will be accounted for in the operational and safety analysis of the alternatives that add capacity to US-23.
Based on current data, 40-50 percent of the current traffic on US-23 is through-traffic (regional/commercial) not having an origin or destination in Ann Arbor. These estimates are based on data from Replica, which uses existing crowd-sourced data that is consistently updated using various data sources.
MDOT is coordinating with The Ride for a long-term vision of this corridor. As part of the environmental process, MDOT will analyze planned 20-year improvements from all agencies in the study area and evaluate them with all the study alternatives.
MDOT is coordinating with The Ride as part of this study and is looking to help improve accessibility to the existing Plymouth Road park and ride lot. Currently, The Ride does not have any other park and ride lots planned within in the study corridor of US-23 from north of I-94 to south of M-14. MDOT will assess transit usage of the HOV lane alternative along US-23, which would assist buses with operational efficiency along the corridor.
The US-23 roadway pavement will be rebuilt to improve the condition of the road and likely reduce noise caused by poor pavement conditions. While some of the bridges in the corridor are not currently planned to be rebuilt, they will be repaired and improved.
As part of the study, an aesthetic guide will be developed with the community. The aesthetic improvements from the guide will be implemented when the corridor is rebuilt.
The project is anticipated to be under construction from 2027-2029.
The project website is available for information, questions, comments with an interactive mapping tool, and feedback at www.Michigan.gov/US23AnnArbor. We look forward to you staying engaged.
