CONCRETE TRAFFIC BARRIER SECTION 617.10 PERMANENT CONCRETE TRAFFIC BARRIER.
617.10.1 Description. This work shall consist of constructing permanent concrete traffic barrier as shown on the
plans or as directed by the engineer. For purposes of this specification, permanent concrete traffic barrier will be defined as Type A, B, C, D, E or any modification of these types.
617.10.2 Material. All reinforcing steel shall be Grade 60 deformed bar, and all reinforcing steel and dowels
shall be epoxy coated. All material shall be in accordance with Division 1000, Material Details, and specifically as follows: Item Section/Specification Reinforcing Steel for Concrete 1036 Concrete Curing Material 1055 Dowel Bars 1057 Preformed Fiber Expansion Joint Material 1057 Joint Sealer 1057 Joint Filler 1057 Prestressing Strands AASHTO M 203
617.10.3 Construction Requirements.
617.10.3 1 Permanent concrete traffic barrier shall be constructed of pavement concrete or Class B-1 concrete.
Concrete shall be air-entrained with 28-day compressive strength of 4,000 psi. Material, proportioning, air- entraining, mixing, slump and transporting shall be in accordance with Sec 501. Concrete shall be placed and finished in accordance with Sec 703. Permanent concrete traffic barrier shall be cured in accordance with Sec 502.
617.10.3 2 Permanent concrete traffic barrier shall be constructed using an extrusion machine or forms
specifically designed for constructing cast-in-place reinforced concrete traffic barrier. Precast units will not be permitted. Barriers that do not exhibit a consistent surface shall be corrected to the satisfaction of the engineer.
617.10.3 3 For retrofit installation, dowels shall be installed in accordance with Sec 1039.30.
617.10.4 Method of Measurement. Final measurement will not be made except for authorized changes during
construction, or where appreciable errors are found in the contract quantity. The revision or correction will be computed and added to or deducted from the contract quantity. Where required, measurement for each type of permanent concrete traffic barrier, including barrier height transitions, will be made to the nearest 1/2 linear foot for each continuous length and totaled to the nearest linear foot for the sum of the lengths.
617.10.5 Basis of Payment. Accepted permanent concrete traffic barrier will be paid for at the contract unit
price for each of the types specified in the contract. No direct payment will be made for reinforcing steel, dowels, joint filler material, and sawed joints. SECTION 617.20 TEMPORARY TRAFFIC BARRIER.
617.20.1 Description. This work shall consist of furnishing, installing, relocating and removing temporary
traffic barrier as shown on the plans or as directed by the engineer. For purposes of this specification, temporary concrete traffic barrier will be defined as Type F three-loop concrete traffic barrier or approved alternate barrier system that meets NCHRP 350 or MASH 2016 criteria.
617.20.2 Material. All material shall be in accordance with Division 1000 Materials Details and Sec 1064.2.2.1.
617.20.2 1 All Type F temporary barrier shall be in a serviceable condition during installation and relocation as
determined by the engineer. Reference the Missouri Quality Standards for Temporary Traffic Control Devices for evaluation criteria on serviceable condition.
617.20.2 2 Use of two-loop temporary Type F concrete traffic barrier shall not be allowed after January 1, 2023.
617.20.2 3 Other types of temporary traffic barrier will be allowed if the barrier has been approved in
accordance with Sec 1064 and meets the project specific need as approved by the engineer.
617.20.3 Certification. Prior to use the contractor shall submit to the engineer a manufacturer's certification of
crashworthiness per NCHRP 350 or MASH 2016 for portable concrete barrier or other approved temporary barrier. Type F three-loop temporary concrete barrier is required to meet NCHRP 350 requirements regardless of manufacturing date and may be used until January 1, 2030. All other temporary barriers manufactured prior to January 1, 2023 may be used until January 1, 2030. All other temporary barriers manufactured after January 1, 2023 shall meet MASH 2016 crash test requirements.
617.20.4 Construction Requirements.
617.20.4 1 As directed by the engineer, damaged units shall be immediately replaced and removed from the
right of way at the contractor's expense.
617.20.4 2 All barrier sections shall remain the property of the contractor unless specified otherwise in the
contract.
617.20.4 3 Equipment or material shall not be stored near temporary barriers within the limits shown on the
plans or as approved by the engineer.
617.20.4 4 Anchoring of Type F temporary concrete traffic barrier shall be as shown on the plans. Other types of
temporary traffic barrier shall be anchored in accordance with the manufacturer’s recommendations.
617.20.5 Method of Measurement. Measurement of temporary traffic barrier and relocated temporary traffic
barrier will be made to the nearest 1/2 linear foot for each continuous length and totaled to the nearest linear foot for the sum of the lengths. Measurement of temporary traffic barrier height transitions and relocated temporary traffic barrier height transitions will be made per each.
617.20.6 Basis of Payment. Accepted temporary concrete traffic barrier and temporary concrete traffic barrier
height transitions will be paid for at the contract unit price for each of the pay items included in the contract. Accepted relocated temporary concrete traffic barrier and relocated temporary concrete traffic barrier height transitions will be paid for at the contract unit price for each of the pay items included in the contract. SECTION 617.30 TRAFFIC BARRIER DELINEATORS.
617.30.1 Description. This work shall include furnishing, installing and maintaining retroreflectorized traffic
barrier delineators as shown on the plans or as designated by the engineer.
617.30.2 Material. All material shall be in accordance with Division 1000, Material Details, and specifically as
follows: Item Section Delineators 1065
617.30.3 Construction Requirements.
617.30.3 1 Delineators shall be placed on all traffic barrier spaced at 50-foot intervals.
617.30.3 2 Delineator reflector colors shall correspond with pavement marking. Delineators shall be sheeted on
one side, facing oncoming traffic, unless otherwise specified. Where permanent concrete traffic barrier divides opposing lanes of travel, the delineators shall have retroreflective sheeting on both sides corresponding to adjacent pavement marking.
617.30.3 2.1 Delineators mounted on permanent concrete traffic barrier shall be anchored with galvanized
mechanical fasteners that prevent movement in accordance with the manufacturer’s recommendations.
617.30.3 2.2 Delineators mounted on temporary concrete traffic barriers shall be mounted to the traffic barrier in
accordance with the manufacturer's recommendations.
617.30.3 3 Any damaged or missing delineators shall be replaced by the contractor at the contractor's expense.
617.30.4 Basis of Payment. No direct payment will be made for traffic barrier delineators provided on new
permanent concrete traffic barrier or temporary traffic barrier. Delineators specified for installation on existing permanent concrete traffic barrier will be measured and paid for per each.
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