STUDY OF URBAN INTERCHANGE PERFORMANCE: I-25/GARDEN OF THE GODS ROAD, COLORADO SPRINGS; EVANS AVENUE/SANTA FE DRIVE, DENVER. FINAL REPORT

Two single point urban interchanges (S.P.U.I.) were studied in order to evaluate performance and safety characteristics under varying conditions of operation. Comparative data are presented for travel time delay studies, intersection delay studies, volumes, accidents, and maintenance. One of the S.P.U.I.s is located at Sante Fe Drive and Evans Avenue in Denver; it is a retrofit design of an urban diamond. The second S.P.U.I. is located at I-25 and Garden of the Gods Road in Colorado Springs; it is a replacement for a tight urban diamond interchange. The study concludes that the S.P.U.I. design is appropriate in restricted right-of-way situations, needs improved guide signing, and needs well-maintained pavement markings, and that the justification of in-pavement guide lighting is questionable.

• Corporate Authors:

  University of Colorado, Denver

  Center for Urban Transportation Studies, 1100 14th Street
  Denver, CO  United States  80202

  Colorado Department of Highways

  4201 East Arkansas Avenue
  Denver, CO  United States  80222

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Pollard Jr, W S
• Publication Date: 1990-12

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 74 p.

Subject/Index Terms

• TRT Terms: Guide signs; Highway design; Interchanges; Interchanges and intersections; Maintenance; Performance evaluations; Road markings; Safety; Street lighting; Traffic crashes; Traffic delays; Traffic volume; Travel time; Urban areas
• Old TRIS Terms: In-pavement lighting; Traffic marking
• Subject Areas: Design; Highways; Maintenance and Preservation; Planning and Forecasting; Safety and Human Factors; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00608644
• Record Type: Publication
• Report/Paper Numbers: CDOH-DTD-R-90-14
• Contract Numbers: PR0001(23)
• Files: TRIS, USDOT, STATEDOT
• Created Date: May 31 1991 12:00AM