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Updating Boulder’s work zone traffic control guidelines Marni Ratzel Bicycle & Pedestrian Transportation Planner GO Boulder/city of Boulder.

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Presentation on theme: "Updating Boulder’s work zone traffic control guidelines Marni Ratzel Bicycle & Pedestrian Transportation Planner GO Boulder/city of Boulder."— Presentation transcript:

1 Updating Boulder’s work zone traffic control guidelines Marni Ratzel Bicycle & Pedestrian Transportation Planner GO Boulder/city of Boulder

2 2 GO Boulder >Make it easier to get around town by… >Providing “Great Options” in transportation.

3 3 Pedestrian detour?

4 4 Bikeway detour?

5 5 Presentation overview >About Boulder >Update process >Case study examples >Draft policies >Progress on practices

6 6 About Boulder

7 7 >101,500 people >25 square miles >County seat >Home of CU-Boulder serving 29,000 students >Gateway community to the Rocky Mountains

8 8 Biking System >On-street lanes miles*  175 built  69 more proposed *Includes bike shoulders >95% of arterial streets have bike facilities

9 9 Boulder’s Greenway System >a series of corridors along Boulder Creek and six of its tributaries

10 10 Biking System >Multi-use path miles  111 built  66 more proposed >Underpasses  74 built  53 more proposed >Bike rack on all buses

11 11 On-Street bike facilities

12 12 Mode share

13 13 Bikeway detour?

14 14 Updating Boulder’s WATCaSH Work Area Traffic Control and Safety Handbook

15 15 >Adopted in 1980 >Outdated >Policy but not practice

16 16 Involve stakeholders >Interdepartmental work group >Transportation Advisory Board >Barricade companies and contractors >Bicycling and walking organizations and individuals

17 17 Next generation document Update process >Address all modes >Clear expectations >Codified into code >Supplement MUTCD

18 18 Traffic Engineering Responsibilities Boulder Revised Code 1)The standards of the traffic engineering profession and of the state and federal governments; 2)Public safety; 3)The most efficient use of the streets and city parking areas; and 4)The costs involved.

19 19 WATCaSH Update Goals >Assure public safety >Protect system integrity and travel mobility of all >Achieve balance among often competing impacts: environmental, financial and social impacts

20 20 Interdepartmental Work Group >Planning & Development Services >Transportation and Utilities Project Management, >Transportation and Utilities Maintenance, >and Communications

21 21 Key issues: operations >When is it acceptable or necessary to close public ROW? >When a facility is closed, how should that closure be handled? >What factors should be considered? >Would policies for closing a sidewalk be different than for closing a multi- use path or bike lane/vehicular lane?

22 22 Key issues: authorization >What role does transportation operations / planning staff have in making decisions about closures? Review all public ROW closures or Grant authorization to project manager/right-of-way inspector? >Do we charge fee for closures?

23 23 Key issues: other >Non-standard signing City obligated to furnish Liability >Communication Requirements for advance notice On site accountability

24 24 Key factors of work zone impacts >Duration and time >Scope and size >Type of facility impacted >Type and amount of each mode impacted

25 25 Case Study Examples

26 26 When are differing levels of impact reasonable in interest of … 1.Safety, efficiency and mobility for all modes of travel in the public right of way; and 2.Financial costs involved with projects and their related work zone traffic control

27 27 Carnegie between Baylor and Yale Carnegie impacts: >Sidewalk closure >Three to 10 days >Pedestrians detoured to other sidewalk sidewalk closure = detour = Example: sidewalk repair program 27

28 28 The Peloton Arapahoe impacts: >North side multi- use path closed for several months >Temporary path provided through site during construction path closure = path detour = Example: redevelopment project

29 29 Example: 2008 CIP project 29 N. Broadway bike lane project >Phase II impacts: >(Linden – Norwood) >East side multi-use path closed >NB outside travel lane closed to motorists & barricaded for path detour Path closure = Lane closure = detour =

30 30 Draft policies

31 31 Hierarchy of closures Standard closures >Closures that occur between 9 a.m. and 4 p.m. >Gives implied authorization from traffic engineer >Includes some vehicular lane, sidewalk and bike lane closures.

32 32 Standard closure: vehicular lane >Closure of one lane, where at least one other lane for that direction or movement will remain open; or >A short-term closure –20 minutes or less; or >A rolling closure –generally stopped at a single location for 20 minutes or less.

33 33 Standard closure: sidewalk >A sidewalk adjacent to a roadway that is classified as a “Local” roadway; and >Not within the CAGID or UHGID boundary areas; and >The closure is to occur for one week or less; and >Not the only sidewalk adjacent to the roadway. >Doesn’t require pedestrians to detour to a sidewalk on a separate, parallel roadway.

34 34 Standard closure: bike lane >A bicycle lane upon a roadway that is classified as local or collector roadway; and >Closure is handled using the city of Boulder Method for Handling Traffic (MHT) for bicycle lane closures policy.

35 35 Hierarchy of closures Non-standard closures >Any closure not defined as a “standard” closure in Section 5-a is defined as a “non-standard” closure. >Authorization requires review from Traffic Engineer and agreement on the method of handling impacts. >Non-standard closures include but are not limited to the following types of facility closures…

36 36 Non-standard closure: vehicular lane >Any lane closure during any time of day outside of the 9 a.m. to 4 p.m. time period; or >Any multiple lane closure; or >Any closure that requires a flagging operation; >Any closure that detours traffic to another roadway

37 37 Non-standard closure: sidewalk >Any sidewalk adjacent to a roadway classified as other than a “Local” roadway, >Any sidewalk within the CAGID or UHGID boundary areas, >Any sidewalk for the duration of more than 7 days. >Any sidewalk along a roadway where no other sidewalk is adjacent to the roadway. >Any sidewalk closure that will require pedestrians to detour to the sidewalk on a separate, parallel roadway.

38 38 Non-standard closure: bike lane >a bicycle lane upon a roadway classified as an arterial; >a contra-flow bicycle lane; >a bicycle lane which requires the bicycle traffic to detour to another roadway.

39 39 Non-standard closure: path >A multi-use path closure is never considered to be “standard”; >Detour plan required; >Detour onto a facility where bicyclists are not allowed to ride requires temporary designation as multi-use path; >Construction detour signing must be furnished and installed by the Project.

40 40 Detour options 1.Construct a temporary detour facility 2.Allocate a roadway lane as the detour facility 3.Detour to the other side of the street 4.Detour to another corridor

41 41 Closures requiring detours >Must develop and execute a detour sign and marking plan >Sidewalk and multi-use path detour signing must include but is not limited to MUTCD signing to: Inform users of facility closure Direct users at each decision point along the detour route to guide users around the closure, including “End Detour” signing.

42 42

43 43

44 44 Communication policies Notification: >The nature/purpose of the work; >The time and duration; >Anticipated impacts; >Detour routes, if any; and >Contact information

45 45 Other policies >Special events must adhere to guidelines >Emergency closures are exempt during mobilization only >Review fee structure for ROW permits

46 46 Progress on Practice

47 47 Detour designating a sidewalk as a multi-use path

48 48 Detour using roadway lane

49 49 Detour closing a wide shoulder

50 50 Thank you Please visit GOBoulder.net For more information, contact Marni Ratzel at


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