Attachment A1 - Maintaining Traffic.docx

MICHIGAN

DEPARTMENT OF TRANSPORTATION

SPECIAL PROVISION

FOR

MAINTAINING TRAFFIC

SUP:ISH:KPF of 5 APPR:SUP:BTC:03-25-21

a. Description. This work consists of providing all labor, materials and equipment to maintain traffic as specified herein for as-needed shoulder maintenance work on all state trunk lines within Baraga and Houghton Counties.

b. General. Maintain traffic in accordance with the standard specifications, including any supplemental specifications, and as specified herein.

1. Coordinate work operations with contractors performing work on other projects within or adjacent to the Construction Influence Area (CIA), as outlined in the coordination clause.

2. MDOT maintenance crews and/or Contract Maintenance Agencies may perform maintenance work within or adjacent to the CIA.

c. Construction Influence Area (CIA). The CIA includes the right-of-way of the following roadways, as described below:

1. From the point where advance construction warning signing begins to the point where construction signing ends.

2. In addition, the CIA includes the rights-of-way of any intersecting roads and ramps adjacent to the work zone for a distance of approximately 500 feet in advance of the state trunkline.

d. Traffic Restrictions. Maintain traffic in accordance with the maintaining traffic typicals contained herein, except as noted below. Changes or adjustments to the maintaining traffic typicals may be necessary to fit field conditions, subject to approval of the Engineer or as determined by the Engineer.

1. Utilize the following Maintaining Traffic Typicals:

A. M0020a

B. M0090a

C. M0110a-MOD

D. M0160a

E. M0240a-MOD

2. Do not work, deliver material, or close lanes during the holiday periods as defined in Table 1.

Table 1: 2021 Holiday Periods

3. Do not work, deliver material, or close lanes on M-203 during the Canal Run as defined in Table 2.

Table 2: 2021 Special Events

4. Conduct all work during daytime hours only.

5. Where work cannot be performed using shoulder or lane closures, maintain two-way traffic at all times on the trunk line and all intersecting roads using traffic regulator control. Place the arrow panel, signs and channelizing taper for the traffic regulator operation at locations approved by the Engineer for adequate visibility by oncoming traffic.

6. Maximum single traffic regulator sequence lengths are specified for the following segments: All other traffic regulating sequences are allowed to cover a maximum closure length of 2 miles.

A. M-203 within the City limits of Hancock is 0.5 mile.

B. M-26 in Franklin Township (CS 31013, MP 0.000-3.130) is 0.5 mile.

C. US-41 is 0.5 mile.

7. No more than 1 shoulder or lane closure is allowed on each trunk line route at one time.

A. The maximum closure length is 2 miles unless otherwise approved by the Engineer.

B. Do not close shoulders on both sides of the road at the same time, at the same location.

8. Do not utilize more than one traffic regulator operation at one time on each trunk line route.

9. Maintain driveway access to all businesses and residences during construction. Prior to any temporary closures, coordinate with affected owners during construction.

10. Once work is initiated that includes any lane restrictions, continue until that work is completed. Remove any lane restrictions where no work has taken place for more than 1 day. No additional payment will be made for removal or replacement of lane restrictions resulting from a lack of work.

11. Crossroads must remain open to traffic at all times. Use intermediate traffic regulators at each intersection approach and commercial driveways within the closure limits, as directed by the Engineer. Use traffic regulator control as directed by the Engineer for cross street traffic while working through intersections.

12. Monitor the work zone for traffic delays and backups. Take action to correct delays longer than 10 minutes or traffic backups of more than 1/4 mile. If informed by the Engineer that these thresholds have been exceeded, take the following corrective action:

A. Stop all construction operations immediately.

B. Ensure the roadway is in a safe condition and open it to traffic.

13. Place plastic drums, as needed, in advance of any incomplete work, during non-working periods.

14. When utilizing a shoulder closure, do not occupy any part of the active traffic lane with personnel or equipment. If this situation cannot be avoided, then utilize a lane closure.

15. A speed reduction will be used when lane closures or traffic regulators are utilized. Where the posted speed is 65 MPH, the work zone speed will be first dropped to 55 MPH, then 45 MPH WWP. Where the posted speed is over 45 MPH, the work zone speed will be 45 MPH WWP.

e. Traffic Control Devices.

1. General. Ensure all traffic control devices and their usage conform to Part 6 of the MMUTCD and must meet the “acceptable” criteria as defined in the ATSSA publication entitled “Quality Guidelines for Temporary Traffic Control Devices and Features” at the time of initial deployment and after each work order completion, and as specified herein.

A. Cover existing regulatory, warning and construction signs that are not applicable during construction.

B. Clean each sign, barricade, and channelizing device once per week and as directed by the Engineer.

2. Temporary Signs.

A. Provide temporary sign spacing and taper lengths as shown on Maintaining Traffic Typical M0020a.

B. Do not display signs more than 3 days prior to the start of work. When work is complete, cover temporary signs within 3 days.

C. Place additional W20-1 ("ROAD WORK AHEAD") signs on intersecting or adjacent roads where construction activities may be encountered.

D. Distances shown between construction warning, regulatory and guide signs shown on the Maintaining Traffic Typicals are approximate and may require field adjustment, as directed by the Engineer.

E. Construct all temporary signs with legends and symbols flush to the signs face and not extending beyond the sign borders or edges.

F. Place additional R2-1a “WHERE WORKERS PRESENT 45” signs as shown on Maintaining Traffic Typical M0090a.

3. Channelizing Devices.

A. Use traffic cones with a minimum height of 28 inches during daytime shoulder closures, lane closures, and local streets.

B. Place channelizing devices at a spacing (in feet) not to exceed:

· in tapers: 1 times the posted speed (in miles per hour), 50 feet maximum.

· in tangents: 2 times the posted speed (in miles per hour), 100 feet maximum.

C. Ensure all devices have sufficient ballast to prevent moving or tipping. If moving or tipping occurs, place additional ballast, as directed by the Engineer, at no additional cost to the Department. No more than two ballasts are allowed on each channelizing device.

f. Measurement and Payment. The estimate of quantities for maintaining traffic is based on signing and related traffic control devices for 1 shoulder closure, 1 single lane closure, and 1 traffic regulator sequence. This estimate also includes a maximum of 2 Type C lighted arrows (min 48 inch by 96 inch) to be in use at any one time.

1. No additional payment will be made for the joint use of traffic control items with other Contractors or MDOT maintenance.

2. No payment will be made for additional signage brought to the project site but not utilized.

3. Payment for additional W20-1 ("ROAD WORK AHEAD") signs on intersecting or adjacent roads where construction activities may be encountered will be part of the daily traffic control pay item.

4. No additional payment will be made for additional signing or maintaining traffic devices to expedite the construction.

5. Traffic control will be paid by the day when active shoulder gravel work is occurring within the traffic control setup. Any cost to relocate traffic control devices to different shoulder gravel work locations during a work day will be included in the payment of 1 day for the pay item. Traffic control will be paid at a maximum total of 1 Work Day per day of use. If a Shoulder Closure is used on the same work day as a Single Lane Closure in Multi-Lane Section, only the Single Lane Closure in Multi-Lane Section will be paid. Shoulder Closure and Single Lane Closure in Multi-Lane Section will be considered incidental to Single Lane Closure with Flag Control on any work day in which flag control is used. Payment for these items includes all labor, equipment, and materials to setup, maintain, and remove the shoulder closure or lane closure. Below are the pay items that will be used for traffic control: