Case Studies

This database includes both Case Studies that have been described in official publications and Projects that have been posted here by site members . To search for a particular project, enter a keyword or click on "Advanced Search."

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Courtesy of DDOT

11th Street Bridges Project

Washington, DC (Started 2008-07-02)

The incomplete freeway system in Southeast Washington forces drivers to exit the freeway onto neighborhood streets to reach their destinations. Some of the primary routes are through environmental justice neighborhoods. Freeway and local street... more

Bruce R.Watkins Drive

Kansas City, MO (Completed 2001)

Bruce R. Watkins Drive, a Missouri Department of Transportation project, is a 10.2 mile-long artery, which links downtown Kansas City to Southtown. The design and construction of this project included aesthetic design with environmental... more

California: Developing and implementing Corridor Master Plans (CMPs)

Two one-day workshops focusing on how CMPs can be used to implement CSS principles to solve transportation & community issues and the mechanics of their funding and implementation in Caltrans. Included a Caltrans project case study, interactive group... more

The purpose of the project was to replace two existing functionally obsolete truss bridges crossing the Cooper River in Charleston Harbor.

Cooper River Bridge Replacement Project

Charleston Harbor, SC

The purpose of the project was to replace two existing functionally obsolete truss bridges crossing the Cooper River in Charleston Harbor. The new structure would need to 1) Increase the capacity of US 17 over the Cooper River, 2) Improved traffic... more

Corridor Management Plan: Minnesota Highway 38 Edge of the Wilderness National Scenic Byway

Grand Rapids, MN (Completed 1995)

The purpose of creating a Corridor Management Plan was to coordinate the philosophies and activities of land management agencies with those of the state and county authorities responsible for planning, designing, constructing, and maintaining a... more

Design for Reconstruction of US 93: Evaro to Polson, Montana

Evaro, MT

US 93 runs from Arizona to Canada. It is a two-lane road through much of Montana, entering big-sky country from Idaho at Lost Trail pass and passing through Missoula, Kalispell, the Flathead Indian Reservation, and along the western shore of Flathead... more

El Camino

In recognition of the Spanish migration from the Atlantic coast to the present U.S. Mexico border, each state has designated the roadways the compromise the route as the El Camino East/West Corridor in order to promote tourism and historic... more

FLORIDA Adapts Existing Performance Measures to Reflect CSS

Three half-day sessions for different audiences: a presentation of recent research on quantifying the benefits of CSS, an interactive workshop to apply performance measures to an FDOT CSS project, and an action planning session. Also prepared... more


Hawaii Incorporates CSS Principles and Activities Into Requests for Proposals (RFP) For Consultants

Collection of RFP and proposal evaluation criteria for eight CSS projects from other state DOTs, representing a range of project sizes and scopes.

Houghton Streetscape and Brick Street Re-Installation

Houghton, MI (Started 2007, Completed 2009)

The Michigan Department of Transportation (MDOT) Ishpeming Transportation Service Center (TSC) and its partners took an innovative approach on the US-41 Houghton, Michigan, downtown streetscape project by, among other things, actually drawing... more

Houston Levee Road from Wolf River to Macon Road

Memphis, TN (Completed 2010-01)

This four mile long project is intersected by two other major roads in eastern Shelby County. The corridor has long been designated for a typical seven lane urban arterial. When a safety study commissioned by the county Mayor indicated that this... more

Connecting Dallas Timeline

IH-30 East Gateway

Dallas, TX

Over fifty years ago, Fair Park, portions of Deep Ellum, and adjacent neighborhoods were separated from the rest of the city by the construction of Interstate 30. While the highway provided much-needed mobility and helped suburban development, there... more


Illinois Linking CSS and NEPA Processes

Two one-day workshops focused on getting resource agencies involved early in the project development process. Included a presentation by MaineDOT, two IDOT project case studies, and interactive group discussion on how IDOT might improve their... more

Green Street overlay of Town Center collector cross section

Jacksonville Collector and Green Streets Plan

Jacksonville, NC

By developing a network of Green Streets, the City of Jacksonville will improve its stormwater management and simultaneously enhance and expand public open space, along with reinforcing desired land use and transportation patterns.

Aerial of Existing Roadway

Lewistown Narrows

Mifflin, PA (Started 2004, Completed 2007-12-14)

The $110 million Lewistown Narrows project involved widening U.S. Routes 22/322 from a two-lane highway to a four-lane expressway through a 6.5-mile section of the Juniata River valley in the Pennsylvania Appalachians that is severely restricted by... more

M-69: Paint River Bridge Rehabilitation

Crystal Falls, MI (Completed 2002)

The bridge spans the Paint River in the city of Crystal Falls, located in Iron County.

Built in 1924, the structure is the only non-redundant open spandrel concrete arch bridge in Michigan. The project purpose was to maintain safe... more

NH 111A / Nashua Road / Old Bridge Street / Main Street intersection and NH 111A / Old Bridge Street / Common Street intersection

Maine Engages External Partners in the Enhanced Project Scoping Process

Mentoring of three interdisciplinary teams for ongoing projects, including a series of meetings over several months

Marquette Interchange (Aerial)

Marquette Interchange Reconstruction Project

Milwaukee, WI

The Marquette Interchange Project was necessitated by the need to replace and modernize an existing four-level system interchange in downtown Milwaukee. Studies had shown that bridges and structures were deteriorating and needed to be repaired or... more

Mass Highway CSS Technical Assistance Workshop

Massachusetts: Incorporating CSS Principles into Bridge Projects Including the Accelerated Bridge Program

Two one-day workshops covering public involvement and communication skills; case studies of bridge projects integrating CSS principles; and a group exercise to develop a public involvement strategy for a current MassDOT bridge project.

Project Development & Design Guide

Mass Highway Project Development & Design Guide, 2006

(Completed 2006)

The program was initiated in direct response to disputes with communities over various project elements including lane and shoulder widths, designs perceived to be inappropriate for community surroundings, designs perceived to have negative impacts... more

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