Presentation on theme: "Maintenance of Traffic (MOT)"— Presentation transcript:
1 Maintenance of Traffic (MOT) By: Stefanie D. Maxwell, P.E.Specialty Engineer, Office of ConstructionEzzeldin Benghuzzi, P.E.MOT Engineer, Office of Roadway Design
2 RPMs missing on lane lines - Index 600, Sheet 13 requires RPMs to be installed on all lane lines at 5 feet center to center in the approach and transition of the lane shift.
3 Temporary Lane Separator has white delineators - Index 600, Sheet 11 requires orange tubular markers or orange and white vertical panels.
4 White temporary lane separator was installed - Index 600, Sheet 11 requires the temporary lane separator to be yellow.
5 Pedestrian signal pole is placed in plastic drum encased by milling material - Spec requires all temporary traffic control devices to be a QPL product which ensures crashworthiness.
6 Drop-off is greater than 3 inches located within the clear zone behind curb and gutter [Index 600, Sheet 10 requires a barrier for drop-offs greater than 3 inches within the clear zone or 1:4 shoulder treatment].
7 Mixing of devices at driveway - Index 600, Sheet 9 prohibits intermixing of devices.
8 Use of non-standard pedestrian channelization on bridge [Index 600, Sheet 2 requires use of pedestrian channelizing device listed on the QPL].
10 Above ground hazard located in clear zone [Index 600, Sheet 3 requires a 14 clear zone for 35 mph [posted speed limit].
11 Business entrance signs were on portable sign stands [Index 600, Sheet 6 requires all signs to be posted when work operation exceeds one day].Clear Sight distance not adequate. [Index 600, Sheet 2 requires adequate clear sight distance.
12 The third cartridge in the Quadguard crash cushion was a Type II - Per the QPL Vendor Drawings, it should be a Type I.
13 Crash cushion cartridge is damaged/crushed - Replace damaged cartridges per manufacturer’s requirements.
14 Crash cushion nose support missing - Nose support is required per the manufacturer’s installation manual.
15 Loose nuts on anchor bolts for crash cushions installed on concrete - QPL Vendor Drawing require 120 ft-lbs.
16 Debris/above ground hazard in clear zone - Index 600, Sheet 3 requires 30 foot clear zone (runout). The stockpiled debris is between the departure line and the clear zone which shall be free of hazard.
17 Barrier and crash cushion are not offset which causes the transition panel to be attached improperly - Index 415, Sheet 9 requires the barrier and crash cushion to be aligned and slightly offset when a transition panel is installed.
18 Crash cushion foundation thickness questionable on shoulder - QPL Vendor Drawings require minimum of 6” of asphalt.
19 Transition from guardrail to temporary barrier wall is not standard - Index 414, Sheets 9, 10, and 13 provides standard attachment to bridge rail – Type K barrier is required.
20 Barrier wall on bridge does not have transition pattern - Index 414, Sheet 8 requires transition units anchor pattern of 3, 3, 2, 1.
21 Transition Stakes/Anchors Barrier wall was not transitioned from freestanding to staked – Arrows below represent the transition pattern - Index 414, Sheet 8 requires transition units anchoring pattern of 1, 2, 3, 3, staked/anchored.Transition Stakes/AnchorsExisting StakesStake Stakes Stakes Stakesper unit per unit per unit per unitDirection of Traffic
22 Nonstandard connection to bridge railing -Index 414, Sheet 9 requires transition splice to connect Type K to bridge railing.
23 Nonstandard connection to bridge railing -Index 414, Sheet 9 requires transition splice to connect Type K to bridge railing.
24 Deflection space behind low profile barrier has stored material and other debris - Index 412, Sheet 2 requires 9 inches deflection space.
25 Deflection space behind low profile barrier is not free and clear of material [Index 412, Sheet 2 requires 9 inches deflection space]
26 Type K Barrier is located within the deflection space of the low profile barrier wall - Index 412, Sheet 2 requires nine inches of deflection space.
27 CorrectWhite delineators are used on low profile barrier and the object marker is missing [Index 600, Sheet 12 requires orange tubular markers with white sheeting. Index 412, Sheet 1 requires a Type I object marker placed at end of barrier].
28 Type K abutting Low Profile Barrier - The Design Standards do not provide a connection detail for dissimilar barriers that deflect different amounts.
29 Old anchor plate bolts are on traffic side of barrier - Cut off to prevent vehicle from snagging.
30 Less than two foot of paved deflection behind barrier wall on a 1:10 slope - Index 414, Sheet 6 requires 2 feet of paved deflection space on a 1:10 slope for 45 mph or greater.
31 Missing anchor plate - Index 415, Sheet 4 requires two anchor plates on barrier abutting crash cushion.
32 Stored material is located within the deflection space - Index 415, Sheet 1 requires two feet of deflection space for 45 mph speed or less.
33 Overlap of temporary barrier and no clear space between walls - Index 415, Sheet 6 requires a minimum of six sections of barrier wall at overlap and two feet of clear space between the walls.
34 Type K Barrier has partial fill in the deflection space - Index 414, Sheet 7 requires a minimum of 5’ wide back fill for the full height of the barrier.
35 Barrier wall staked on back side - Index 414, Sheet 6 requires barrier to be staked on the traffic side.
36 Type K Barrier wall was staked in median - Index 414, Sheet 7 requires barrier to be freestanding in the median.
37 Use of Index 415 barrier wall connecting pins for Type K [Index 414, Sheet 4 requires a rectangular top plate connecting pin – pin used for 415 barrier is weakened due to snake pin hole which is located at shear point and cannot be substituted]
38 Barrier wall connection loops missing and broken - Replace barrier Barrier wall connection loops missing and broken - Replace barrier. Specs requires that all traffic control devices meet acceptable standards as outlined in American Traffic Safety Services Association (ATSSA’s) “Quality Guidelines for Temporary Traffic Control Devices and Features”.
39 Drainage slots are filled with milling material - Spec 102 requires traffic control devices to be maintained.
40 Overlap of temporary barrier and no clear space between walls - Index 415, Sheet 6 requires a minimum of six sections of barrier wall at overlap and two feet of clear space between the walls.
41 Barrier placed on non flat surface - Index 415, Sheet 1 requires 1:10 or flatter surface.
42 Transition from guardrail to temporary barrier wall is not standard - Index 414, Sheets 9, 10, and 13 provides standard attachment to bridge rail – Type K barrier is required.
43 Barrier installed on top of curb – blunt end in clear zone [Index 415, Sheet 1 requires 2 feet of paved deflection space on a 1:10 slope for 45 mph or less].
44 Barrier is installed backwards [Index 414, Sheet 4 provides the details of connection between barrier units].
45 No transition from freestanding to backfilled barrier [Index 414, Sheet 8 requires staked transition of 1, 2, 3, 3 in advance of backfilled barrier].
47 Single Post Median Barrier Mounted Sign Support Effective July 2014
48 Index 600 Sheet 12 Longitudinal Channelizing Devices (LCD) Effective July 2014Pedestrian Longitudinal Channelizing DevicesThis is an example of Pedestrian LCD
49 Index 600 Sheet 12 Longitudinal Channelizing Devices (LCD) Effective July 2014Pedestrian Longitudinal Channelizing DevicesThis is an example of Pedestrian LCD
50 Longitudinal Channelizing Devices (LCD) Index 600 Sheet 12Longitudinal Channelizing Devices (LCD)Effective July 2014PAY ITEMPedestrian Longitudinal Channelizing Device, per foot.
51 3 inches wide by 4 inches high Placed on top of temporary barrier wall Barrier DelineatorsEffective July 2014Sheeting:Yellow or White3 inches wide by 4 inches highType IV or XIPlaced on top of temporary barrier wallAs of July 01, 2014 letting, Barrier delineators will replace Type C Steady Burn LightsBarrier delineators for use on temporary guardrail, barrier and traffic railing shall consist of retroreflective sheeting permanently adhered to inch minimum thick body. The body shall have a flexible hinge which allows the reflector to fold down and spring back to an upright position after impact. Barrier delineators for guardrail shall be designed for mounting to the web of steel posts or designed for mounting to wood posts. Barrier delineators for barrier wall and traffic railings shall be designed for mounting to the top of the barrier wall.Use: The barrier delineators are to be spaced at 50' centers in transitions, 100' centers on curves and 200' centers on tangent roadways.Retroreflective SheetingThe sheeting for barrier delineators shall be Type IV or XI meeting the requirements of Section 994. The sheeting shall be yellow or white, depending on the locations of use for each. The dimensions of the retroreflective sheeting shall be 3 inches wide by 4 inches high. The sheeting shall be installed by the delineator manufacturer.Payment: : Payment for furnishing, installing and maintaining the barrier delineators installed on top of barrier wall will be included in the cost of barrier wall.01/04/14
52 Index 600 Sheet 4 Temporary Raised Rumble Strips Effective Jan 2015Close picture of the rumble stripsMolded Engineered Polymer
53 Molded Engineered Polymer Rumble Strip Index 600 Sheet 4Molded Engineered Polymer Rumble StripEffective Jan 2015Another type of Rumble Strips is the Molded Engineered Polymer Rumble Strips:1 inch High12 inch wide11 feetweight 100 lb and do not require anchoring and they are reusable.
54 Molded Engineered Polymer Rumble Strip Index 600 Sheet 4Molded Engineered Polymer Rumble StripEffective Jan 2015Included in index 600 sheet 4 the signs and the distances between the sets. There are 3 sets and each set is made of 3 stripes. . The reason for the reduction of sets and strips, because this type of rumble strips is thicker and provide greater level of sound and vibration.
55 Removable Polymer Rumble Strip Index 600 Sheet 4Removable Polymer Rumble StripEffective Jan 2015This pictures shows a set of the Removable Polymer rumble strips made by Advanced Traffic Marking
56 Removable Polymer Rumble Strip Index 600 Sheet 4Removable Polymer Rumble StripEffective Jan 2015on a 2 way 2 lane facility lane closure, The designer has the option of using rumble strips. Index 600 sheet 4 shows the removable Polymer Rumble strips:250 mil or .25 inch thick4 inch wide11 feet long
57 Removable Polymer Rumble Strip Index 600 Sheet 4Removable Polymer Rumble StripEffective Jan 2015Included in index 600 sheet 4 the signs and the distances between the sets. There are 4 sets and each set is made up of 4 stripes. Light on signs are required for night operation
58 Index 600 Sheet 4Effective Jan 2015PAY ITEMTemporary Raised Rumble Strips - per dayNOTE: Payment is ONE per day that rumble strips are used on a project, regardless ofthe number of sets used each day or the number of times installed or relocated in a day.
59 Questions. Contact: Stefanie Maxwell, P. E. 850-414-4314 Stefanie Questions ???????????????? Contact: Stefanie Maxwell, P.E Ezzeldin Benghuzzi, P.E