Boulder County government offices are closed Monday, May 27, in observance of Memorial Day.

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July 24, 2019

Fourmile Canyon Flood Recovery Project Update – July 24 3-week look ahead –

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You may have seen that Lawrence Construction is expanding the lower of the two signalized work zones in the north section. They are doing this in order to start building the sixth of seven retaining walls. The expanded work zone now will include a driveway, so there will be three traffic signals in use. The driveway signal will only be triggered when a resident on the property approaches the signal at the end of the driveway. The timing for the two on-road signals will need to be lengthened to accommodate for the longer work zone. Exact timing is being determined today, but the total of the two zones will remain under the 15-minute limit.

Here is the three-week look ahead schedule Lawrence provided today:

Mapleton Avenue in the City of Boulder - Construction starts Monday - Detours required

I know many people have been using Poorman Road and Sunshine Canyon Drive/Mapleton Avenue when Boulder Canyon Drive/CO 119 is closed for blasting. Starting at 8 a.m. next Monday, July 29, the City of Boulder will close Mapleton Avenue between 5th and 7th streets The closure will be in place 24-hours a day, seven days a week until 4:30 p.m. on Friday, Aug. 9. Cars and bikes will be detoured on 4th and 8th streets. For more information, contact Brian German with the City of Boulder at 303-441-4918.

Thank you for your patience and understanding. Let me know if you have questions, comments, or concerns.

Have a good day.


Andrew Barth
Boulder County Transportation