Main Street Rehabilitation Project Update

Thank you for supporting 
Downtown businesses 
during this construction time! 

The City of Longmont's Pavement Management Program was in Downtown in 2017. Street projects of this program are selected based on system-wide needs and priorities.  Main St. between 3rd Ave. and 9th Ave. was slated for rehabilitation work this spring/summer. 

Main Street conditions to be addressed: 

  • Pavement condition (concrete and asphalt) have become functionally deficient requiring more frequent and costly maintenance techniques
  • Curb ramps at crosswalks must be upgraded to meet Federal Americans with Disabilities Act (ADA) standards

Visit the City of Longmont site for more information on the city-wide Pavement Management Program, including other areas of Longmont to be improved in 2017.

Construction Companies for the Main St. Project

Concrete work: Colorado Civil Infrastructure, Inc.
Asphalt work: Asphalt Specialties Co, Inc.

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As of July 13, 2017, all major project tasks have been completed and traffic and parking restrictions have been lifted. The City is currently scheduling crews to complete minor finishing work to utilities and asphalt surfaces. This follow up work will be 2-3 days with limited traffic impacts. 

Follow up Work Scheduled

July 19-20: Raise in ground utility covers between 3rd and 9th Ave. to be flush with new asphalt surface. Temporary lane closures and parking spaces temporarily restricted when working in the outside lanes. Work planned in the north bound lanes from 7am - 4pm and the south bound lanes from 8:30am - 6pm.

Project Sequence and Scope of Work

Overall Goal: To complete all work by Mid-July

  • Monday, May 8 – Commence concrete work between 3rd Avenue and 6th – At this time no parking will be permitted on either side Main Street in the immediate vicinity of construction
  • Saturday & Sunday, May 20-21, 300 Block Closure in conjunction with Artwalk. Cure time will last through Sunday afternoon. Opened to traffic Sunday evening.
  • Friday, June 2 – Finish concrete work between 3rd Avenue and 6th
  • Monday, June 5 – Commence concrete work between 6th and 9th- there will be limited and isolated impacts to on street parking during this time.
  • Tuesday, June 16 – Finish concrete work between 6th and 9th
  • Between Wednesday, June 14th and Wednesday June 21st   - Commence asphalt work between 3rd and 9th
  • Mid-July – Finish project.

Step 1: Remove and replace decorative crosswalks and accessible ramps, and damaged curbs, gutters, and sidewalks (curb/gutter/sidewalk repair between 6th & 9th Ave. only)

Step 2: Mill and leveling course with crack prevention reinforcement

Step 3: Final overlay with new traffic striping (line painting) and pavement markings

  • 2 -3 weeks total for Steps 2 and 3, working between 3rd & 9th Ave.

Proposed Project Work Hours

  • Monday – Thursday, 7am – 6pm
  • Friday, 7am – 5pm
  • Extended hours: Monday – Thursday, 6am – 8pm for concrete phase between 3rd & 6th Avenue
  • 300 block will be closed to vehicular traffic May 20 - 21.

Public Access During Major Concrete/Asphalt Work

Vehicle and Pedestrians 

  • Vehicle traffic on Main St. reduced to one lane in each direction
  • No traffic across Main Street from each Avenue during construction near the Avenue intersections
  • No parking on Main Street in construction zones
  • Main St. Parking open Friday evenings through Sunday evenings 
  • Pedestrian access will be open to all businesses and residents in the construction area
  • RTD Main Street bus stops temporarily moved to Coffman and Kimbark Streets
  • Mid-Block Crossings will be closed to pedestrian traffic for the duration of the project. Pedestrians must cross Main St. at the Avenues.

Business Access

  • Access to all businesses open at all times
  • Deliveries from alley and Avenues only
  • Customer parking maps available from LDDA


  • Alleys and Avenues will be open for delivery companies


No Parking on Main St. while construction is happening in the area. Some Avenue parking around the corners from Main St. will be unavailable as well when working on those intersections.

Plenty of parking is open on side streets and in public lots off Kimbark and Coffman Streets. Click here for a DOWNTOWN PARKING MAP.

Cone Zone Survival Guide

This support guide can help businesses in the construction zone cope with and thrive during construction. Full of valuable tips for any business. View guide. 

Project Contact Information

Project Public Information Officer
Cathy Kramer
(720) 526-0966, 24/7 hotline

City of Longmont Engineering Services - Concrete repairs 
Tom Caprarella
Work: (303) 651-8312

City of Longmont Engineering Services - Asphalt repairs
Alden Jenkins
Work: (303) 651-8567

Longmont Downtown Development Authority
Del Rae Heiser, Downtown Specialist
Work: (303) 651-8586