Through the city's Pavement Management Program (PMP), all streets in Boulder's 300-mile street system are inspected every three years to check existing conditions and inform when and to repair the pavement.
For current information about traffic and parking impacts during pavement work, view the Cone Zones Map. Note: resurfacing schedules are subject to change due to weather impacts and contractor availability. Please watch no-parking signs on-site for the most up-to-date information.
Before and After Photos
2023 Proposed Resurfacing Locations
|Kalmia/Juniper||Jasmine Cr||9th St to cul-de-sac|
|Kalmia/Juniper||9th St||Kalmia Ave to Jasmine Cr|
|Kalmia/Juniper||Jonquil Pl||Juniper Ave to cul-de-sac|
|Kalmia/Juniper||Jack Pine Ct||Juniper Ave to cul-de-sac|
|Kalmia/Juniper||Japonica Wy||Juniper Ave to cul-de-sac|
|4 Mile Neighborhood||Lonetree Ct||Sprucedale Pl to Jay Rd|
|4 Mile Neighborhood||Longview Ln||Sunnyside Pl to 47th St|
|4 Mile Neighborhood||Westcliffe Ct||Sunnyside Pl to Sprucedale Pl|
|4 Mile Neighborhood||Sunnyside Pl||Westcliffe Ct to Longview Ln|
|4 Mile Neighborhood||Sprucedale Pl||Westcliffe Ct to Longview Ln|
|4 Mile Neighborhood||Lonetree Ct||Sprucedale Pl to Sunnyside Ln|
|North 30th Area Streets||34th St||Cul-de-sac to Diagonal Hwy|
|North 30th Area Streets||Oneal Pkwy||30th St to Oneal Cr|
|North 30th Area Streets||Chisholm Tr||Cul-de-sac to Iris Ave|
|North 30th Area Streets||Hayden Pl||34th St to cul-de-sac|
|North 30th Area Streets||Corona Tr||30th St to cul-de-sac|
|North 30th Area Streets||Oneal Cr||Oneal Pkwy to Oneal Pkwy|
|Valmont Area Streets||Wilderness Pl||Valmont Rd to Valmont Rd|
|Valmont Area Streets||Center Green Dr||Valmont Rd to cul-de-sac|
|Valmont Area Streets||Center Green Ct||Cul-de-sac to Valmont Rd|
|Baseline Rd (Central)||Baseline Rd||29th St to Foothills Pkwy Mill & Overlay|
|Baseline Rd (Central)||Mohawk Dr||Comanche Dr to Baseline Rd Mill & Overlay|
|Central||Colorado Ave||28th St. to ~ 900 ft. east of 28th St. East bound drive lane resurfaced as part of CDOT 28th & Colorado Project.|
|Hawthorn||14th St||Hawthorn Ave to Iris Ave Reconstruction|
|Hawthorn||15th St||Hawthorn Ave to Iris Ave Reconstruction|
|Hawthorn||15th St||South End - Hawthorn Mill & Overlay|
|Hawthorn||16th St||Hawthorn Ave to Iris Ave Reconstruction|
|Newlands||3rd St||Balsam Ave to Cul-de-sac (North of Forest) Mill & Overlay|
|Newlands||7th St||Balsam Ave to Cul-de-sac Mill & Overlay|
|Newlands||8th St||Alpine Ave to Balsam Ave Mill & Overlay|
|Newlands||10th St||Cedar Ave to Cul-de-sac (North of Forest) Mill & Overlay|
|Newlands||11th St||Balsam Ave to Dellwood Ave Mill & Overlay|
|Newlands||Balsam Ave (Newlands)||7th St to 8th St Mill & Overlay|
|North Boulder||Broadway||North and south bound drive lanes only. R & R 5-6 inches. Center lanes and bike lanes to remain.|
|Valmont||75th St. Waste Water Entrance Rd||Entrance Gate to 75th St Mill & Overlay|
|Whittier||13th St||Portland Pl to Cedar Ave Mill & Overlay|
|Whittier||Alpine Ave||Broadway to 13th St Mill & Overlay|
|Whittier||Balsam Ave||Broadway to 19th St Mill & Overlay|
|Whittier||Edgewood Dr||19th St to Valmont Rd Mill & Overlay|
|Whittier||North St||13th St to Alpine Ave Mill & Overlay|
View a map version of the lists above.
The city has established a Pavement Management Program (PMP) for Boulder’s 300-mile street system, which includes inspecting and rating all streets on a three-year interval to maintain awareness of existing conditions and guide where pavement repairs will be made in future years.
Pavement management typically begins with curb and gutter repair work and Americans with Disabilities Act (ADA) compliant curb access ramp upgrades. Typically, this work occurs in the spring, when warm temperatures support concrete repairs. Sometimes this work takes advantage of warm weather and contractor availability and begins in mild fall and winter months.
From spring through fall, prioritized streets receive different types of pavement treatments, depending on the current condition of the street. See below for more information on the types of maintenance the city uses. Depending on the street, new road striping may be completed, too.
Types of Pavement Treatments
Cracks in the pavement are sealed to prevent moisture from entering the base and sub-base of a roadway, reducing pavement failures and potholes and extending the pavement life.
Asphalt rejuvenation is used on streets to restore the original pavement properties that degrade over time by oxidation and weathering. The rejuvenation process happens in three steps:
- An oil-based emulsion is sprayed onto the street.
- A layer of washed sand is applied on top of the emulsion to minimize tracking of the emulsion onto nearby surfaces during the curing process.
- The street is sweeped to remove the sand.
The city has contracted with Pavement Restoration to conduct asphalt rejuvenation within the city.
In response to questions from the community regarding the asphalt rejuvenation program, staff will be providing more advanced notice and additional signage before future treatments begin.
The roadway is milled and then resurfaced with two inches or more of new asphalt.
Asphalt resurfacing or overlays are used on higher-volume roads or lower-volume streets that have deteriorated to a point that a chip seal or other pavement preservation treatments are no longer effective. An overlay typically requires some level of removing the existing surface by grinding, either along the edge or the full width of the street, depending on the condition of the street.
The overlay process generally occurs in several phases:
- Removal and replacement of deteriorated curbs and gutters, as well as reconstruction of selected sidewalk ramps to conform to Americans with Disabilities Act (ADA) criteria.
- Milling of the roadway surface.
- Actual resurfacing of the road with new asphalt, combined with re-striping.
The overlay process at times may include a phase to remove and patch some areas of the street that have extensive wear or damage beyond the surface of the pavement. The existing asphalt pavement and subgrade are removed from the roadway and then reconstructed with six to eight inches of new asphalt pavement.
At times, streets deteriorate to a point that requires total reconstruction of the pavement structure. Streets requiring reconstruction will typically require similar steps as an overlay, with pedestrian ramp and curb and gutter repair, but the entire pavement structure is removed, the subgrade is reconditioned and new asphalt and striping is completed.
Chip seal is a surface application used to prolong the life of an existing street by applying a liquid asphalt membrane binder (“seal”) and a layer of small crushed stone (“chip”) over the existing street surface. Chip seal typically extends the useful life of the existing pavement by eight to 12 years and is typically used on residential or lower-volume streets.
Streets that receive a chip seal typically require asphalt, curb and gutter repair in preparation for the actual chip seal application. The chip seal process does not significantly affect traffic but does require that parking be removed from the street while the work is being completed. The chip seal process typically takes two to three days. Typically, one to two days later, a thin layer of liquid asphalt “fog coat” is applied on top of the stone chips to provide further sealing of the pavement. The final step is sweeping the streets to remove any remaining chips that have come loose during the process.
The existing pavement and sub-grade are removed and the roadway is reconstructed with six to eight inches of new asphalt.
Mobility Enhancements Initiative
The Mobility Enhancements Initiative, part of the Pavement Management Program, incorporates bicycle and pedestrian facility improvements into annual pavement resurfacing work to help make our streets safer for walking and biking.
- Pedestrian crossing and intersection safety improvements near Mesa Elementary
- Installation of a paved multi-use path through Bear Creek Park connecting Lehigh and Bear Creek Elementary
- Resurfacing of Lehigh/Greenbriar between Table Mesa and east of Galena/Redstone
- Removal of the center turn lane between Table Mesa Drive and Cragmoor Road to add a buffer and provide more separation between bike lanes and vehicle travel lanes
Learn more about the Lehigh Corridor Project.
Resurfacing of 17th Street from Pearl Street to Macky Drive
Two-stage left-turn queue boxes for making left turns onto Walnut Street from 17th Street, including “no right turn on red” signs for drivers
Green pavement markings to increase the visibility of bike paths on Canyon Boulevard and Arapahoe Avenue
A new bike lane segment southbound from Pearl Street to Walnut Street
Newly restriped bike lanes and crosswalks between Pearl Street and Macky Drive
Folsom Street (Valmont Avenue to Pine Street)
In December 2021, the city finished installation of:
- A cast-in-place curb-separated bike lane treatment with plastic delineators for enhanced visibility of the curb separation for bicyclists and motorists.
- Additional green conflict markings
- Enhanced signing
- Resurfacing and striping upgrades (completed over the summer)
This location was identified for a vertically separated bike facility due to its 30 mph speed limit and higher average daily traffic.
Baseline Road (Gregory Canyon to Broadway)
- Installed a buffered bike lane at the eastbound approach of the intersection at Baseline and Broadway
- Resurfacing on Baseline was completed in early October.
The buffered bike lane will help eastbound bicyclists position themselves in a dedicated area at the front of the intersection, increasing their visibility.
All three streets were identified for multimodal safety improvements in Boulder’s Low-Stress Walk and Bike Network Plan, which charts a course for enhancing existing facilities and filling in missing links in Boulder’s bicycle and pedestrian transportation network.
Pine Street (Folsom Street to 28th Street)
A new buffered bike lane was installed between Folsom and 28th streets. Along with the new bike lane, the speed limit on this stretch of Pine Street was lowered from 30 mph to 25 mph.
Table Mesa Drive (Vassar Drive to Broadway)
A number of bicycle safety improvements were made across the Table Mesa corridor, in addition to the pavement resurfacing work. These included adding and widening bike lanes and installing a painted "bike box" at Broadway to assist with safe turning movements.
Folsom Street (Iris Avenue to Valmont Road)
The city installed green bike lane striping at intersections to improve visibility added a buffer between the existing drive lanes and bike lanes and reduced the speed limit from 30 mph to 25 mph.