Iowa Access Management Case Study Locations

Access Management Case Study Locations in Iowa

Full Case Studies

These seven cases will be fully studied in terms of traffic operations and safety on a before and after improvement basis.




Project Type

Year Completed

Ames US 69 (South Duff Ave.)


South 3rd Street to Squaw Creek Two-way left turn lane Fall 1994
Ankeny US 69 (Ankeny Blvd.)


First Avenue to NCL Raised median Fall 1994
Clive 86th Street NW


Walnut Creek to Franklin Street Raised median and two-way left turn lane Fall 1992
Des Moines US 65/69 (SE 14th Street)


Indianola Road to Army Post Road Raised median During 1985
Fairfield US 34 (Jefferson St.)


11th Street to 22nd Street Driveway consolidation Fall 1992
Mason City US 18 (1st Street)


At Pierce Avenue Raised median Fall 1991
Spencer US 71 (South Grand Ave.)


US 18 Intersection to Little Sioux River Two-way left turn lane Summer 1992


Business Vitality Case Studies (A Subset of the Full Case Studies)

The five locations listed below will also be fully studied in terms of business vitality on a before and after improvement basis. Extensive personal interviews will be conducted with businesspersons, motorists/customers and local public officials.

For all seven full case studies, the research team will evaluate published and other existing business vitality data, such as retail sales trends.

Baseline Case Studies

Two case study location previously discussed by the Task Force are too new to be studied effectively on an "after improvement" basis. However "before" data on business activity will be collected to provide a baseline for later study by the Iowa DOT or others.

"Sidebar" Case Studies

An additional ten or twelve case study locations will be selected to be used as brief examples to illustrate good or poor access management practices from around Iowa. These will be selected from the eighteen locations shown on the map.


CTRE is an Iowa State University center.

Address: 2711 S. Loop Drive, Suite 4700, Ames, IA 50010-8664

Phone: 515-294-8103
FAX: 515-294-0467

CTRE Communications: Marcia Brink
CTRE Webmaster: Michele Regenold


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