Capital Projects: Road & Bridge Construction


This page provides an overview of the large road and bridge projects currently under construction or design. These transportation projects are part of the City's Capital Improvement Program.You can view projects like these on our Large Projects in Longmont map to see what is planned and under construction around town.

The City of Longmont provides information to help those who may be affected by these large construction projects. Find information on how we support impacted businesses and keep residents informed.

You can find information about general road closures by visiting our Cone Zones and Closures webpage.

Projects Under Construction

Boston Avenue Connection

This project will extend Boston Avenue from Main Street (US 287) eastward connecting to Martin Street. This connection will provide an additional east-west connection between South Pratt Parkway and Martin Street.

Downtown Alley Improvements

The City and the Longmont Downtown Development Authority (LDDA) are undertaking a project to improve the downtown alleys including the pedestrian experience and open new economic opportunities.

Focus on South Main

"Focus on South Main" is a multi-year effort intended to improve the southeastern gateway to Longmont’s core along Main Street. There are three components that comprise the Focus on South Main effort: Main Street and Ken Pratt Boulevard Intersection Improvements, Main Street Bridge Replacement at St. Vrain Creek, and Main Street Pavement Reconstruction.

Pavement Management Program

The City’s annual Pavement Management Program contracts with private sector contractors for replacement of broken curbs and sidewalks, preventive maintenance such as crack sealing, chip sealing and pavement overlay and reconstruction.

SW Longmont Pedestrian Underpass Projects

This project will provide two, new pedestrian/bicycle connections:

  1. between Dry Creek Drive and Pike Road
  2. at Hover Street and Dry Creek

Projects in Planning and Design

South Pratt Parkway Bridge Over St. Vrain Creek

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