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Iowa Underpass Bicycle/Pedestrian Improvements

The City and County of Denver is planning an ADA-accessible connection underneath the railroad tracks and to the South Platte River Trail, with improved crossings and new sidewalks for pedestrians and people on bikes.

The new path will enhance multimodal safety and connectivity in the adjacent neighborhoods, provide ADA access under the railroad tracks, and improve comfort for people travling near Santa Fe Drive/US-85 and the D-18 bike route.


Planned Improvements

  • Remove stairs to create an ADA accessible, separated path
  • Eliminate the gap along the D18 bike route providing increased safety, clearer wayfinding, and an improved user experience
  • Improved crossings at Santa Fe Drive 
  • New sidewalk offset from Santa Fe Drive, spanning Jewell Avenue to Florida Avenue

rendering of new elevated underpass next to roadway beneath rail crossing

Proposed Iowa Underpass Improvements

Project Status: Design

2018: Study and Planning

2018-2020: Design Process

2021: Construction

Council District: 7

Neighborhoods: Overland, Platt Park 



Project Update: Fall 2019

In September 2019, the State Historic Preservation Office (SHPO) mandated the City and County of Denver take the necessary actions and steps to ensure the historic nature of the underpass and historic properties are preserved appropriately.

In an effort to preserve the places that make Colorado unique, the next steps for the project will determine the effects of proposed work on listed properties. The final project will meet its established purpose to accommodate pedestrians and other trail users safely and effectively.

Construction schedules will be determined based on these factors; the City will provide updates as information is available.

Project Background and Materials

In May 2011, the City and County of Denver published Denver Moves. The initiative expands the vision for the non-motorized transportation and recreation system in denver, identifying the next phase of priorities for making bicycle and multi-use connections in the Mile High City. 

Read the Denver Moves plan (PDF)